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A manufacturer of nickel-hydrogen batteries randomly selects 100 nickel plates for test cells, cycles them a specified number of times, and determines that 14 of the plates have blistered. Does this provide compelling evidence for concluding that more than 10% of all plates blister under such circumstances using a significance level 0.05?
Let p be the true proportion of plates that blister under such circumstances. State the appropriate hypotheses.
A. H0: p B. H0: p = 0.10 versus Ha: p 0.10 C. H0: p = 0.10 versus Ha: p > 0.10 D. H0: p > 0.10 versus Ha: p = 0.10 E. H0: p = 0.10 versus Ha: p
What is the test statistic?Give answer to three decimal places What is the critical value? Give answer to three decimal places. The proper conclusion is to reject H0. A. TRUE B. FALSE
Three chips are then selected at random and without replacement from II. (a) What is the probability that all three are white?
Assuming that the process is operating correctly according to specifications, what is the probability that a sample will indicate that an adjustment is needed?
Solve the following system of linear inequalities by graphing.
Let the random variable X denote the number of emergency calls received by the campus police office each day. The probability mass function of X is given by:
Be certain to mention the direction of the relationship, the strength of the relationship, and whether our findings are statistically significant
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Assume that replacement time for TVs are normally distributed with a mean of 8.2 years and a standard deviation of 1.1 years. The probability a randomly selected TV will have replacement time less than 5.5 years to be .0071.
A microwave oven repairer says that the mean repair cost for damaged microwave oven is less than $90. You work for the repairer and want to test this claim.
A special test is given to people complaining of sever headaches. if someone has a brain tumor, the test is positive with a probability of .8 (80%).
The mean noise level of stroke floors in 20 different hospitals was 63.1 dBA, and the standard deviation was 4.1 dBA. The mean noise level for 24 hospital operating rooms was 56.3 dBA and the standard deviation was 7.5 dBA. At α = .05 can it be co..
American Demographics reported the results of a survey on the planning habits of men and women. In response to the question.
suppose you want to test the claim that mu!=3.5 with standard deviation unknown. Given a sample size of n = 40 and a level of significance of alpha=.05, when should you reject H0.
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