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1. The lengths of Atlantic croaker fishes are normally distributed, with a mean of 9 inches and a standard deviation of 2.56 inches. An Atlantic croaker fish is randomly selected.
a. Find the probability that the length of the fish is less than 8 inches.
b. Find the probability that the length of the fish is between 8 and 12 inches
A national survey is conducted to assess the association between hypertension and stroke in persons over 55 years of age. Compute the incidence of stroke in persons over 55 years of age
you want to give a bonus to the top 5 of your sales people and extra special attention to the bottom 25. average sales
A manufacturer of executive jet aircraft is concerned with its profit picture over the short run. It produces two different models of planes, x1 and x2. Its profits are $30,000 for each x1 and $20,000 for each x2. There are two major constraints o..
Random samples of 25 observations were selected from each of 3 populations. For these data, SSTR= 120 and SSE = 216.
suppose that a local chapter of sales professionals in the greater san francisco area conducted a survey of its
a bag contains 6 red balls and 4 blue balls. 3 red balls are selected at random. find the probability of selecting 3
Identify all the averages (mean, median, or mode) that can be used to summarize the data. Dollar amount due on next payment.
For a normal random variable X with mean 70 and standard deviation 10. Calculate the probability that 60 80}.
according to chemical engineering progress nov. 1990 approximately 30 of all pipework failures in chemical plants are
This question related to Basic Statistics and discuss about calculation of range, interquartile range, variance and standard deviation
what is the probability of an event? what are mutually exclusive events? what does collectively exhaustive mean?how can
Suppose you want to test the claim that population mean miu=3.5. Given a sample size of n=34 and a level of significance of alpha=0.01, when should you reject Ho?
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