subject
Mathematics, 05.08.2021 16:20 mandy9386

Scores on a certain test are normally distributed with a variance of70. A researcher wishes to estimate the meanscore achieved by all adults on the test. Find the sample size needed to assure with 95 percent confidence thatthe sample mean will not differ from the population mean by more than2 units.

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 12:30
What is the value of 1/3x + 7x when x = 5
Answers: 1
question
Mathematics, 21.06.2019 14:30
Select the correct answer. what is the surface area of the victory podium shown here? include all surfaces of the podium, including the bottom. a. 61.5 square feet b. 61.75 square feet c. 65.25 square feet d. 69 square feet
Answers: 2
question
Mathematics, 21.06.2019 15:30
Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary
Answers: 3
question
Mathematics, 21.06.2019 15:30
Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.
Answers: 3
You know the right answer?
Scores on a certain test are normally distributed with a variance of70. A researcher wishes to estim...
Questions
question
Mathematics, 23.10.2019 20:00
Questions on the website: 13722363