Question

22. The average income in a certain area is assumed to be approximately $25,000. A sample of size n = 30 gives a mean of $22,000 and a sample standard deviation of $7,000. Compute the test statistic. a. .43 b. -2.31 c. -.43 d. -2.35

          22. The average income in a certain area is assumed to be approximately $25,000. A sample of size n = 30 gives a mean of $22,000 and a sample standard deviation of $7,000. Compute the test statistic.
a. .43
b. -2.31
c. -.43
d. -2.35

22. The average income in a certain area is assumed to be approximately 25,000. A sample of size n = 30 gives a mean of22,000 and a sample standard deviation of 7,000. Compute the test statistic.
a. .43
b. -2.31
c. -.43
d. -2.35

Added by Brian W.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

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Solved by Expert Adi S

02/07/2023

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The sample mean is $22,000 and the standard deviation is $7,000. Show more…

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Please solve this question. Thank you. 22. The average income in a certain area is assumed to be approximately $25,000. A sample of size n = 30 gives a mean of $22,000 and a sample standard deviation of $7,000. Compute the test statistic. a. .43 b. -2.31 C. -.43 d. -2.35