(adsbygoogle = window.adsbygoogle || []).push({}); [HELP] i need help with them plz

20. A biologist is studying a new hybrid tomato. It is known that the seeds have a probability of 0.8 of germinating. The

biologist plants 400 seeds. What is the expected number of seeds that will germinate? (Assume a binomial distribution.)

a. 200 b. 240 c. 320 d. 480 e. none of these

21 - 25. A company claims that their chocolate chip cookies contain an average of 15 chips per cookie. A study of

100 cookies is done, and the average chip count of the sample is 14.78 with a standard deviation of 1.2.

21. What is the null hypothesis?

a. Ho: m § 15 b. Ho: m = 15 c. Ho: m ¥ 15

22. What kind of critical region is involved in this situation?

a. left-tailed b. right-tailed c. two-tailed

23. What is the standardized test statistic in this hypothesis test?

a. -1.65 b. -1.83 c. -1.96 d. -2.14 e. none of these

24. What is the p-value of this test statistic?

a. 0.0437 b. 0.0672 c. 0.0289 d. 0.0185 e. none of these

25. Based on a significance level of a = 0.05, what would the conclusion be?

a. fail to reject the null hypothesis b. reject the null hypothesis

to 20.question

I'm stuck with number 20..i think its C but im not too sure

and mostly i'm stuck on the null hypothesis..i'm confused because i can't tell what im supposed to pick

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# [HELP] i need help with them

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