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Based on data from the college board, assume that SAT scores are normally distributed with a mean of 1518 and a standard deviation of 325. Assume that many samples of size n are taken from a large population of students and the mean SAT score is computed for each sample.
A. If the sample size is n=100, find the mean and standard deviation of the distribution of sample means.B. If the sample size is n=2,500, find the mean and standard deviation of the distribution of sample means.
A student is taking a multiple choice exam in which each question has four choices . Assume that the student has knowledge of a correct answer to any of the questions.
Salary information for a random sample of male and female employees of a large company is shown below.
What type of probability distribution is appropriate for this problem? Determine the probability of getting no calls between eight and nine in the morning. Calculate the probability of getting exactly five calls between eight and nine in the morning
However, 2% of the Dallas clocks are defective. If you go shopping and buy a clock from this company, what is the probability that you buy a defective clock?
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.
Make a decision using the Decision Rule approach at given α = 0.05.
A customer wants to estimate the average delivery time of a pizza from the local pizza parlor. The customer wants to obtain a sample mean that falls within 3.204 minutes of the true average delivery time with 99% confidence. If the customer knows ..
The strength of 30 insulators are in the file. Please help with the below questions: Construct a frequency distribution and a percentage distribution.
The residents play both shuffleboard and poker, find the probability that a resident plays poker, given that they garden (that is, find P(poker | garden).
One use of the Chi-square goodness of fit test is to determine if specified multinominal probabilities in the null hypothesis is correct.
What is the basic principle that can be used to simplify a polynomial? What is the relevance of the order of operations in simplifying a polynomial?
would this prove that they are exceeding their goal, using α = .025?
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