Elementary Statistics Using Excel (6th Edition)
Verified Answer ✓
A continuous random variable has a normal ... more
Verified Answer ✓
; A normal distribution has a bell-shaped curve... more
Verified Answer ✓
The mean is and the standard deviation is . ; A ... more
Verified Answer ✓
The notation is a score with an area of to the ... more
Verified Answer ✓
0.4 ; The probability that a value is greater than... more
Verified Answer ✓
0.8 ; The probability that a value is less than 4 ... more
Verified Answer ✓
0.2 ; The probability that a value is between 2 ... more
Verified Answer ✓
0.4 ; The probability that a value is between 2.5 ... more
Verified Answer ✓
0.6700 ; The standard normal curve has its shaded ... more
Verified Answer ✓
0.8508 ; The standard normal curve has its shaded ... more
Verified Answer ✓
0.6992 ; The standard normal curve has its shaded ... more
Verified Answer ✓
0.6063 ; The standard normal curve has its shaded ... more
Verified Answer ✓
; The standard normal curve has 0.8907 of its ... more
Verified Answer ✓
; he standard normal curve has 0.3050 of its area... more
Verified Answer ✓
; The standard normal curve has 0.9265 of its ... more
Verified Answer ✓
; The standard normal curve has 0.2061 of its ... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
Sketch the standard normal distribution curve with... more
Verified Answer ✓
is the value that corresponds to the lowest of ... more
Verified Answer ✓
is the value that corresponds to the lowest of ... more
Verified Answer ✓
and 2.05 ; On the standard normal curve, the ... more
Verified Answer ✓
and 1.88 ; On the standard normal curve, the ... more
Verified Answer ✓
1.28 ; denotes the -value whose area to its right ... more
Verified Answer ✓
2.05 ; denotes the -value whose area to its right ... more
Verified Answer ✓
1.75 ; denotes the -value whose area to its right ... more
Verified Answer ✓
1.04 ; denotes the -value whose area to its right ... more
Verified Answer ✓
68.26 ; Find the area to the left of by referring... more
Verified Answer ✓
95.44 ; Find the area to the left of by referring... more
Verified Answer ✓
99.74 ; Find the area to the left of by referring... more
Verified Answer ✓
99.98 ; Find the area to the left of by referring... more
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
A standard normal distribution has a mean of 0 and... more
Verified Answer ✓
No, because the distribution of randomly generated... more
Verified Answer ✓
0.8849 ; The shaded area to the left of a score of... more
Verified Answer ✓
0.7257 ; The shaded area to the right of a score ... more
Verified Answer ✓
0.9053 ; The shaded area between a score of 79 and... more
Verified Answer ✓
0.1571 ; The shaded area between a score of 112 ... more
Verified Answer ✓
136 ; The shaded area to the left of is the ... more
Verified Answer ✓
115 ; The shaded area to the right of is the ... more
Verified Answer ✓
69 ; The shaded area to the right of is the ... more
Verified Answer ✓
120 ; The shaded area to the left of is the ... more
Verified Answer ✓
0.0116 ; The probability that an adult male has a... more
Verified Answer ✓
0.0968 ; The probability that an adult female has ... more
Verified Answer ✓
0.6612 ; The probability that an adult females has... more
Verified Answer ✓
0.5867 ; Express the probability that the distance... more
Verified Answer ✓
24.9 in. ; The bottom 90% means that an area of 0.... more
Verified Answer ✓
22.0 in. ; The bottom 25% means that an area of 0.... more
Verified Answer ✓
20.9 in and 26.1 in. No, a distance of 26 inches ... more
Verified Answer ✓
20.7 in and 24.7 in. Yes, a distance of 20 inches ... more
Verified Answer ✓
0.2005No, the proportion of a certain mental ... more
Verified Answer ✓
Men: 95.99%Ladies: 99.99%The desk seems to be made... more
Verified Answer ✓
55.64%Yes, about 44% of ladies were excluded under... more
Verified Answer ✓
0.0070 ; There are three quartiles in a data set. ... more
Verified Answer ✓
Sample mean; sample variance; sample proportion ; ... more
Verified Answer ✓
No. The sampling distribution of the sample mean ... more
Verified Answer ✓
No. The sample taken does not represent a simple ... more
Verified Answer ✓
ProportionProbability00.250.5010.25 Yes, the ... more
Verified Answer ✓
ProportionProbability01 Yes, the mean of the ... more
Verified Answer ✓
Yes, the formula describes the sampling ... more
Verified Answer ✓
The mean absolute deviation (MAD) of a sample is ... more
Verified Answer ✓
The sample size is greater than 30 .There must be ... more
Verified Answer ✓
No. Though the sample size is small , it is ... more
Verified Answer ✓
; The notation and represents the mean and ... more
Verified Answer ✓
Yes. The distribution of the annual incomes in the... more
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
; Find . ; Substitute the value of , and to ... more
Verified Answer ✓
0.0721 ; Substitute the values of , and to find... more
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
; Find . ; Find the z score corresponding to . ; ... more
Verified Answer ✓
Verified Answer ✓
The histogram of the data should closely resemble ... more
Verified Answer ✓
The points in the normal quantile plot do not ... more
Verified Answer ✓
A histogram.A normal quantile plot.Data Outliers... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that is... more
Verified Answer ✓
The data appears to come from a population that ... more
Verified Answer ✓
The data appears to come from a population that ... more
Verified Answer ✓
The data appears to come from a population that ... more
Verified Answer ✓
Interpretation: Data appears to come from a ... more
Verified Answer ✓
Construct a table with three columns and 7 rows.... more
Verified Answer ✓
Construct a table with three columns and 9 rows.... more
Verified Answer ✓
Construct a table with three columns and 10 rows.... more
Verified Answer ✓
Verified Answer ✓
The original set of data does not come from a ... more
Verified Answer ✓
The requirements are satisfied since the values of... more
Verified Answer ✓
Interpretation: The expected average number of ... more
Verified Answer ✓
It would resemble the shape of the normal ... more
Verified Answer ✓
; Check if the requirements, and , are satisfied... more
Verified Answer ✓
Cannot be determined; requirements for normal ... more
Verified Answer ✓
Cannot be determined; requirements for normal ... more
Verified Answer ✓
; Check if the requirements, and , are satisfied... more
Verified Answer ✓
Interpretation: Since the probability is greater ... more
Verified Answer ✓
Interpretation: Since the probability is less ... more
Verified Answer ✓
Interpretation: The probability of having exactly... more
Verified Answer ✓
Explanation: The probability of having exactly 10... more
Verified Answer ✓
Normal Approximation, using table: 0.1723Normal ... more
Verified Answer ✓
228 ; The problem asks for the total number of ... more
Verified Answer ✓
Since the data set has a normal distribution, the ... more
Verified Answer ✓
; Using the table of z-values, look for the z-... more
Verified Answer ✓
; Using the table of z-scores, find the ... more
Verified Answer ✓
; Using the table of z-scores, find the ... more
Verified Answer ✓
Verified Answer ✓
0.8106 ; Determine the -value of the given data ... more
Verified Answer ✓
0.6292 ; Use the formula to determine the z-score... more
Verified Answer ✓
84.536 mmHg ; The 90th percentile indicates that ... more
Verified Answer ✓
0.9564 ; Use the formula to determine the z-score... more
Verified Answer ✓
The graph suggests that the sample is taken from a... more
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
No, the result matches the assumption for the ... more
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
; Create a dot plot via the following steps:Round... more
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓