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The Toylot company makes an electric train with a motor that it claims will draw an average of only 0.8 ampere (A) under a normal load. A sample of eleven motors was tested, and it was found that the mean current was x = 1.20 A, with a sample standard deviation of s = 0.42 A. Do the data indicate that the Toylot claim of 0.8 A is too low? (Use a 1% level of significance.)
What is the value of the sample test statistic? (Round your answer to three decimal places.)
Find the P-value. (Round your answer to four decimal places.)
If you know you need a sample size of 1,063 out of 300,000 to get a 95% confidence level and a 3% confidence interval what steps would you take to get a random sample?
Each home was 24 and the standard deviation of the sample was 5 people. Develop a 98 percent confidence interval for the population mean.
you play two games against the same opponent. the probability that you win the first game is 0.4. if you win the first
At a 0.05 level of significance, does this data show that 2 year college students and private unversity students work an equivalent amount of time?
There are infinitely many primes of the form n^2 - 1. Please list at least 4 of these primes. (I hope it is just as easy as I think, but is there any work to this?)
Draw a tree diagram representing the data. What is the probability that a vehicle stolen in this city will never be recovered?
An analysis of 1,000 cellular phone calls made from company phones at the offices of Kant, Taekitini, Moore, LLC reveals that the length of these calls is normally distributed, with m = 240 seconds and s = 40 seconds.
What percent of the sample means will be greater than 162 seconds? What percent of the sample means will be greater than 153 but less than 162 seconds?
Standard deviation of $1,500. From a sample of 64 graduates, what is the probability that the mean starting salary is between $41,000 and $42,500?
suppose you estimate a model obtaining wage 0.620 0.506 times educ 2.27 times female were wage is measured in
Rhe frequency distribution summarizes a sample of times (in minutes) between eruptions of a cretain geyser. Find the approximate population mean and approximate population standard deviation of the data.
Survey on What do you think is the biggest problem facing education today. One problem with exit polls may be that the wrong "key precincts" were chosen.
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