Round your answers to two decimal places. Use the critical value with three decimal places. a. At 99% confidence, what s the margin of error? $ b. Develop a 99% confidence interval estimate of the mean amount spent for lunch. $ to $ %24
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
20.50 |
14.63 |
23.77 |
29.96 |
29.49 |
32.70 |
9.20 |
20.89 |
28.87 |
15.78 |
18.16 |
12.16 |
11.22 |
16.43 |
17.66 |
9.59 |
18.89 |
19.88 |
23.11 |
20.11 |
20.34 |
20.08 |
30.36 |
21.79 |
21.18 |
19.22 |
34.13 |
27.49 |
36.55 |
18.37 |
32.27 |
12.63 |
25.53 |
27.71 |
33.81 |
21.79 |
19.16 |
26.35 |
20.01 |
26.85 |
13.63 |
17.22 |
13.17 |
20.12 |
22.11 |
22.47 |
20.36 |
35.47 |
11.85 |
17.88 |
6.83 |
30.99 |
14.62 |
18.38 |
26.85 |
25.10 |
27.55 |
25.87 |
14.37 |
15.61 |
26.46 |
24.24 |
16.66 |
20.85 |
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
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