The level of significance indicates the A importance of the

The level of significance indicates the

A) importance of the statistical analysis.

B) probability that a correct decision has been made.

C) degree of rarity required to reject the null hypothesis.

D) proportion of probable outcomes.

The z test for a population mean requires that you know the value of

A) the sample standard deviation.

B) the population mean.

C) the population standard deviation.

D) all of the above.

A standardized test of reading comprehension is designed to yield a value of 6.0 if sixth graders are progressing as expected. In hopes of accelerating their reading comprehension, a random sample of 36 sixth graders undergo an enriched reading program and attain a mean score of 6.4. The appropriate statistical hypotheses are:

A) H0: H1:

B) H0: H1:

C) H0: H1:

D) H0: H1:

=6.4 6.4 <6.0 > 6.0 =6.0 6.0 <6.4 > 6.4

Solution

C) degree of rarity required to reject the null hypothesis.

C) the population standard deviation.

3) H0 : mu= 6.0, H1: mu =/= 6.0