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Bob Nale is the owner of Nale's quick fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.30 gallons. From his records, he selects a random sample of 70 sales and finds the mean number of gallons sold is 5.70. What is the point estimate of the population mean? Determine a 98% confidence interval for the population mean.
Show all the steps of your hypothesis test including a) the claim being tested , b) the null and alternative hypothesis, c) the test statistic, d) the p value, e) initial conclusion, and f) a final conclusion about the original claim.
What is the probability that 0, 1, 2, or 3 hypertensives will be identi ed in such sibships if the hypertensive status of 2 siblings in the same family are independent events?
Assuming that the heights are recorded to the nearest half-centimeter, how many of these students would you expect to have heights.
you are trying a new food recipe and the probability that a friend of yours likes that food is 0.85. if you invite 18
A person is considering purchasing the stock of two home health companies that are similar in all respects except the proportion of earnings paid out as dividends.
If two independent large samples are taken from two populations, the sampling distribution of the difference between the two sample means:
ten trials are conducted in a bernoulli process in which the probability of success in a given trial is 0.3. if x
suppose there is a correlation of 0.87 between the length of time a person is in prison and the amount of aggression
a camera manufacturer just shipped a batch of 36 digital cameras to local retailers and seven of the cameras have a
Could you conclude that Queens College Professors live longer than average? Use the appropriate two-tailed test with an α = 0.05. Also, construct a 95% confidence interval. Do the statistical test and the confidence interval agree? Write up your resu..
The time interval between services at the station follow exponential distribution and as such the mean time taken to serve a unit is 5 minutes. What is the expected average queue length?
the u.s. department of transportation national highway traffic safety administration reported that 77 of all fatally
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