Math question?

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A random sample of 49 customers leaving a supermarket and made purchases revealed that the mean amount spent was $75 with a sample standard devitation of $15. The standard error of this sample is?

a. $15

b. $2.14

c. $2.50

d. $60 to $90

2006-10-28 11:30:37 · 1 answers · asked by mrkittypong 5 in Science & Mathematics ➔ Mathematics

1 answers

d. Standard error means the normal solution set; therefore you can day that anywhere between 60 and 90 is acceptable.

2006-10-28 11:40:58 · answer #1 · answered by Anonymous · 0⤊ 0⤋