Suppose your manager indicates that for a normally distributed data set you are analyzing, your company...

Question

Question

Suppose your manager indicates that for a normally distributed data set you are analyzing, your company...

Suppose your manager indicates that for a normally distributed data set you are analyzing, your company wants data points between z=−1.4z=-1.4 and z=1.4z=1.4 standard deviations of the mean (or within 1.4 standard deviations of the mean). What percent of the data points will fall in that range?

math Statistics-And-Probability

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

solution

P( -1.4< Z < 1.4)

= P(Z <1.4) - P(Z < -1.4)

Using z table,

= 0.9192-0.0808

=0.8384

answer=83.84%

Add a comment

Answer 2

Similar Homework Help Questions

Suppose your manager indicates that for a normally distributed data set you are analyzing, your company...

Suppose your manager indicates that for a normally distributed data set you are analyzing, your company wants data points between z=−1.4 and z=1.4 standard deviations of the mean (or within 1.4 standard deviations of the mean). What percent of the data points will fall in that range? Answer: percent (Enter a number between 0 and 100, not 0 and 1 and round to 2 decimal places)
(2 points) Suppose we have a normally-distributed population that has a mean of 65 and a...

(2 points) Suppose we have a normally-distributed population that has a mean of 65 and a standard deviation of 5. 5. (a) What percent of observations will fall in the interval from 55 to 75? (Hint: Find out how many standard deviations the range spans on both sides of the mean and use the 68/95/99.5 rule) (b) What percent of observations will fall in the interval from 60 to 70?
Suppose you have a normally distributed set of data pertaining to a standardized test. The mean...

Suppose you have a normally distributed set of data pertaining to a standardized test. The mean score is 1000 and the standard deviation is 200. What is the z-score of 1600 point score?

(CO 1) In a normally distributed data set of how long customers stay in your store,...

(CO 1) In a normally distributed data set of how long customers stay in your store, the mean is 44.8 minutes and the standard deviation is 2.6 minutes. Within what range would you expect 95% of your customers to stay in your store?
In a normally distributed data set of how long customers stay in your store, the mean...

In a normally distributed data set of how long customers stay in your store, the mean is 44.8 minutes and the standard deviation is 2.6 minutes. Within what range would you expect 95% of your customers to stay in your store? a2.6-44.8 b37.0-52.6 c42.2-47.4 d39.6-50.0
Suppose a normally distributed set of data has a mean of 172 and a standard deviation...

Suppose a normally distributed set of data has a mean of 172 and a standard deviation of 15. Use the 68-95-99.7 rule to determine the percent of scores in the data set expected to be between the scores 142 and 187. Give your answer in decimal form and keep all decimal places throughout your calculations and in your final answer.

(CO 1) In a normally distributed data set of how long customers stay in your store,...

(CO 1) In a normally distributed data set of how long customers stay in your store, the mean is 50.3 minutes and the standard deviation is 3.6 minutes. Within what range would you expect 95% of your customers to stay in your store 39.5-61.1 46.7-53.9 43.1-57.5 48.5-52.1
Question 2 Suppose you are working with a data set that is normally distributed, with a...

Question 2 Suppose you are working with a data set that is normally distributed, with a mean of 250 and a standard deviation of 46. Determine the value of x from the following information. (Round your answers and z values to 2 decimal places.) (a) 90% of the values are greater than x. (b) x is less than 18% of the values. (c) 25% of the values are less than x. (d) x is greater than 55% of the values.
A useful rule of thumb generally used when statistically treating known normally distributed data is the...

A useful rule of thumb generally used when statistically treating known normally distributed data is the 68-95-99.7 rule. This rule stipulates that about 68% observations fall within __________ standard deviations, about 95% of observations fall within ________ standard deviations, and 99.7% of observations fall within __________ standard deviations.

1. According to the empirical rule, in a normally distributed set of data, approximately what percent...

1. According to the empirical rule, in a normally distributed set of data, approximately what percent of the scores will be within 1 standard deviation (-1 to +1) away from the mean? 40% 95% 68% 75% 2. f you took an IQ test and your score was 2 standard deviations above average, assuming normal distribution, approximately what percent of all IQ test takers would your score be higher than? 98% 60% 70% 80% 3. if you took an IQ test...

Suppose your manager indicates that for a normally distributed data set you are analyzing, your company...

Homework Answers