Mathematics, 04.02.2021 22:50, ashyding4800
1) A test is made of H0 : µ1 =67 versus H1 : µ1 ǂ67. A sample of size n=63 is drawn, and x=64. The population standard deviation is s= 27. Compute the value of the test statistic z.
2) Construct a 99% confidence interval for the population standard deviation σ if a sample of size 23 has standard deviation s=16
3) Use the given data to construct a confidence interval of the requested level.
x = 80, n = 198, confidence level 99%
4) In a fish tank, there are 28 goldfish, 3 angelfish, and 17 guppies. If a fish is selected at random, find the probability that it is an angelfish or a guppy.
5) A survey asked 35,394 homeowners how many pets they owned. The results were as followed:
Number of pets number of Homweowners
0 5,908
1 11,207
2 10,900
3 6,636
4 or more 743
Total 35,394
What is the probability that a sampled homeowner has more than 1 pet?
Answers: 2
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1) A test is made of H0 : µ1 =67 versus H1 : µ1 ǂ67. A sample of size n=63 is drawn, and x=64. The p...
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