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The manager of a paint supply store wants to determine if the mean amount of paint contained in 1- gallon cans purchased from a nationally known manufacturer is actually less than 1-gallon. It is known that for this manufacturer the population standard deviation of the amount of paint is equal to 0.02 gallons. A random sample of 73.0 cans is selected, and the mean amount of paint per 1-gallon can is 1.00 gallons. Use a significance level of 0.05. Is (are) the critical region(s) for this test in the left tail, right tail, or both tails?
Assume we have a population of scores with mean (mu) of 200 and standard deviation (sigma) of 10. Assume that the distribution is normal. Provide answers to the following questions:
What is the sample space for this process and evaluate the variance of the intelligence scores
A student wants their College to offer Kickboxing classes as a Physical Education class. To justify that the class is desired he surveys 200 students and finds that 56% would be interested in taking the class.
Determine mean and standard deviation for number of erroneous returns per batch.
Assume that the duration of human pregnancies can be described by a normal model with mean 268 days and standard deviation 17 days. What percentage of pregnancies should last between 260 and 270 days?
To findout the point estimate of the difference among population mean. Elucidate the percentage increase in the number of days on the disabled list.
the line up contained 5 men. if the identifications were made by ramdom guesses, find the probability thatall witnesses would pick the same person.
At the 5% level of significance, can we infer that the population mean weight of athletic men is lower than the population mean weight of non-athletic men by more than 2 pounds?
Test the teachers hypothesis that there is a significant difference between the pre and post tests.
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Compute the standard error of the proportion.
What is the probability that among 10 true hypertensives at least 50% are being treated appropriately and are complying with this treatment?
Adults is approximately normal with a mean of 191 lbs. and a standard deviation of 20 lbs. Using the 68-95-99.7 rule. What percent of males weigh more than 211 lbs?
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