Answer: One sample z test for means
Step-by-step explanation:
From the information given, the sample size is large. It is greater than 30. Again, the population standard deviation is given. This means that the test statistic would be the z score which is determined by the formula
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = population standard deviation
The probability value would be determined from the normal distribution table.
Therefore, the hypothesis test that should be used is
One sample z test for means
<span>s = -35 or s = 35 . . . . . . . . . . . . . . . </span>
−4 3/7 −4 6/7 −5 3/7 4 2/7 5 1/7
Least to greatest
−5 3/7 −4 6/7 −4 3/7 4 2/7 5 1/7