The Canada Revenue Agency wants to estimate the mean amount people spend if they pay someone to file their income tax return. From their random sample of 16 people they obtained a mean of $128.60 and a sample standard deviation of $30.79.At the 95% confidence level what is the margin of error (on the estimate of the true mean amount spent)? Assume the amounts spent are normally distributed.

Question 7 options:

$4.10

$15.09

$30.79

$16.40

$65.61

Question 8(3 points)

You want to test the hypotheses:

H₀: p = 25%versusH_A: p 25%

At the 10% level of significance, the Decision Rule is Reject H₀if:

Question 8 options:

Z_testis less than -1.645 or greater than 1.645

Z_testis less than -1.28 (or-1.282) or greater than 1.28 (or 1.282)

Z_testis greater than 1.645

Z_test 1.645

Z_testis greater than 1.28 (or 1.282)