6.
A survey of 25 grocery stores produced the following samplestatistics: 1.) mean price for a gallon of milk was $2.98, and 2.)a calculated standard error of $0.10. What is the 98% confidenceinterval to estimate the true cost of a gallon of milk?
Multiple Choice
$2.73 to $3.23
$2.85 to $3.11
$2.94 to $3.02
$2.95 to $3.01
7.
The z-score or z-value corresponding to a95.34% confidence interval is ______.
Multiple Choice
8. The level of significance is the probability of rejecting thenull hypothesis when it is actually true.
True or False
9. A test statistic is a value, determined from sampleinformation, used to decide whether to reject the nullhypothesis.
True or False
10. If the null hypothesis is µ ≥ 200, then a two-tailtest is being conducted.
True or False
