[HELP] i with them

  • Thread starter filmi1
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In summary, 400 seeds are planted with a 0.8 probability of germinating. Out of the 400 plants, 240 will germinate. The expected number of chips per cookie is 14.78 with a standard deviation of 1.2.
  • #1
filmi1
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[HELP] i need help with them please

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 I am not too sure
and mostly I'm stuck on the null hypothesis..i'm confused because i can't tell what I am supposed to pick
 
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  • #2


this is what i thinkkkk they are: 21.a 22.b 23.b 24.b 25.a
but help me ..i don't want to get them wrong? if you know that they are something else then please tell me so i know what i did wrong
 
  • #3


Can you tell us how you obtained your answers??
 
  • #4


Some of the characters you typed are unreadable in my browser.
filmi1 said:
21. What is the null hypothesis?
a. Ho: m § 15 b. Ho: m = 15 c. Ho: m ¥ 15

Is § supposed to be < ?
Is ¥ supposed to be >?
 
  • #5


mark it's done for these .. thanks from u i appreciate

the topic can erare or close
 

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