subject
Mathematics, 21.04.2020 17:59 danizara8

A survey by American Express Spending reported that the average amount spent on a wedding gift for a close family member is $166. A random sample of 45 people who purchased wedding gifts for a close family member spent an average of $160.50. Assume that the population standard deviation is $38. Use a 95% confidence interval to test the validity of this report and choose the one statement that is correct.

a. Because this confidence interval does include $166, the report by American Express Spending is not validated.
b. Because this confidence interval does include $166, the report by American Express Spending is validated.
c. Because this confidence interval does not include $166, the report by American Express Spending is not validated.
d. Because this confidence interval does not include $166, the report by American Express Spending is validated.

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 19:30
Ineed with this problem 21 show steps
Answers: 2
question
Mathematics, 21.06.2019 21:00
Finding tbe values of the variables in each kite
Answers: 1
question
Mathematics, 21.06.2019 21:00
Why is studying fractions important
Answers: 2
question
Mathematics, 21.06.2019 21:30
Worth 15 points handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony? a= p = 1/4 b= p+0.25p c=(p + 1/4)p d=5/4p 0.25p choose 2 answers
Answers: 1
You know the right answer?
A survey by American Express Spending reported that the average amount spent on a wedding gift for a...
Questions
question
English, 02.03.2021 19:00
question
Biology, 02.03.2021 19:00
question
Mathematics, 02.03.2021 19:00
question
Mathematics, 02.03.2021 19:00
question
Mathematics, 02.03.2021 19:00
question
Mathematics, 02.03.2021 19:00