A drug store chain provides an app to its customers to track their shopping habits. One statistic the apptracks is the amount of money

4 answers
Question:

A drug store chain provides an app to its customers to track their shopping habits. One statistic the app tracks is the amount of money the customer saves by purchasing sale items. The company's sales
team pulls data from the previous year for a random sample of 50 customers. They find that the
mean amount of money saved by these customers in the previous year is $154 with a standard
deviation of $26.
(a) Construct a 99% confidence interval for the true mean amount of money saved by all customers
in the previous year by purchasing sale items.
(b) The sales team would like to repeat this study with the goal of obtaining a smaller margin of
error. Propose two changes that would decrease the margin of error. What are potential
drawbacks if those changes are implemented?

Answers

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09

the answer is 489

step-by-step explanation:

Where’s the graph too show me?

135

step-by-step explanation:

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