Mathematics, 02.11.2020 16:40 alailatrenee18541
Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The executives hire a statistical consultant and ask her to determine the mean shopping time, , of customers at the supermarkets. The consultant will collect a random sample of shopping times at the supermarkets and use the mean of these shopping times to estimate . Assuming that the standard deviation of the population of shopping times at the supermarkets is minutes, what is the minimum sample size she must collect in order for her to be confident that her estimate is within minutes of ? Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
Answers: 3
? Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
is
![n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2](/tpl/images/0860/1366/a50a9.png)
![n = [\frac{ 1.96 * 26 }{3} ] ^2](/tpl/images/0860/1366/afc83.png)
Another question on Mathematics
Mathematics, 21.06.2019 18:40
Which of the following represents the range of the graph of f(x) below
Answers: 1
Mathematics, 21.06.2019 20:30
Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.
Answers: 2
Mathematics, 21.06.2019 22:00
Which two undefined geometric terms always describe figures with no beginning or end?
Answers: 3
Mathematics, 21.06.2019 22:00
Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.
Answers: 1
You know the right answer?
Executives of a supermarket chain are interested in the amount of time that customers spend in the s...
Questions
Biology, 12.02.2020 03:25
History, 12.02.2020 03:26
Mathematics, 12.02.2020 03:26
Mathematics, 12.02.2020 03:26
Mathematics, 12.02.2020 03:26
Social Studies, 12.02.2020 03:26
Mathematics, 12.02.2020 03:26
Mathematics, 12.02.2020 03:26
History, 12.02.2020 03:26
