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Assume that the significance level is a=0.01. Use the given information to find the P-value and the critical value(s). With H1: p does not equal 2/5, the test statistic is z=-1.46. Please explain the process to finding the answer.
A local health center noted that in a sample of 400 patients 80 were referred to them by the local hospital. What size sample would be required to estimate the proportion of hospital referrals with a margin of error of 0.04 or less at 95% confiden..
question 1 a psychologist has to develop a new test of spatial perception and she wants to estimate the mean score
One-way random effects model : yi j = + i + i j , i j "s are independent error terms with N(0, 2 ), i are independent N(0, 2 ), And i and i j are independent Why?
Construct a payoff table for Mountain Ski's decision problem of how many pairs of skis to order. What is the best decision from an expected value basis?
suppose x the number of flaws in a roll of polyethylene insulated cable follows a poisson process where ? is 1.1 flaws
With mean 120 mmHg and standard deviation 20 mmHg. The mean systolic blood pressure for the sample was 126 mmHg. How likely is it that the results of this sample occurred?
The items produced weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams. Determine the mean and the standard deviation.
estimating the individual score using normal distribution.systolic blood pressure for men is normally distributed with
what is the probability of generating a password with all lowercase letters if a password consists of eight characters
One suggested environmental determinant of pediatric lung function is the level of cigarette smoking in the home. A researcher wants to do a pilot study with two groups:
suppose iq scores were obtained from randomly selected twins. for 20 such pairs of people the linear corelation
Selecting a Staff Person: At a community swimming pool there are 2 managers, 8 lifeguards, 3 concession stand clerks, and 2 maintenance people. If a person is selected at random, find the probability that the person is either a lifeguard or a mana..
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