hypothesis testing

in this formula "p" is always the

• observed value

• standard error

• expected value

• sample size

Tags

CCSS.HSS.ID.A.4

True/Flase: the null hypothesis for the test is that the proportions are the same.

we reject the null hypothesis when

• test value falls under the critical region

• it doesn't fall under the critical region

find the critical value for the t test in n=10, sigma= 0,05, right tailed test

• 1.833

• 1.740

• 3.306

Tags

CCSS.HSS.ID.A.4

the average strawberry has approximately 200 seeds a student selected a random sample of 10 strawberries and found a sample mean of 185.2 seeds with a standard deviation of 10 can it be concluded that the mean is less than 200?

• 4.210 reject

• 4.680 reject

• -2.101 accept

Tags

CCSS.HSS.IC.B.4

find the p value interval for the test value t=3.025, n=24; right tailed

• 0.01<pvalue<0.025

• 0.10<pvalue<0.25

• 0.10<pvalue<0.20

The proportion of defective items is not allowed to be over 15%. A buyer wants to test whether the proportion of defectives exceeds the allowable limit. The buyer takes a random sample of 100 items and finds that 19 are defective. State the null and alternative hypotheses for this test.

• H0: p ≤ .15, H1: p > .15

• H0: p < .15, H1: p > .15

• H0: p = .15, H1: p > .15

what is p?

• population proportion

• sample size

• sample proportion

Tags

CCSS.HSS.ID.A.4

For a random sample of 9 women, the average resting pulse rate is x = 76 beats per minute, and the sample standard deviation is s = 5. The standard error of the sample mean is

• 0.557

• 0.745

• 1.667