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tarting salaries for 30 recent college graduates in developmental psychology are given below. What is your best point estimate for the average starting salary for developmental psychology majors? Construct and interpret the 90% Confidence Interval for the mean starting salary of college graduates in developmental psychology. Salaries are in thousands.
Weight of the .5 cubic yard bag of landscape much is normally distributed with mean of 40 pounds and standard deviation of 1. Determine the probability that the bag will weigh more than 40 pounds?
For following data, find out whether or not right-hemisphere damage results in significantly decreased performance on spatial skills task.
At α = 0.10 test the claim that there is a difference in means of the salaries. (a) State the Hypotheses: (b) Compute the Test statistic: (Round off correctly)
Your firm has classified orders as either large or small in dollar amount and as either light or heavy in shipping weight. In the recent past, 28% of orders have been large dollar amounts
Explain the conclusion that there were no statistically significant differences (p ≥ 0.05) between the benefits of behavioral therapy and psychoanalysis when treating an eating disorder.
Determine the probability the sample of 40 will have a sales average less than $400,000.
Calculate the coefficient of skewness and coefficient of variation of minutes spent commuting. What do these statistics tell us?
At a certain university, the average cost of books per student was 400.00 last semester. In a sample of 40 students this semsester, their average cost was 340.00 with a standard deviation of 80.00.
Conduct the most appropriate hypothesis test using a 0.05 significance level. Construct a 95% confidence interval for the true proportion of automobiles with drive trains that fail.
An independent second stage is normally distributed with a mean of 43 minutes and variance of 10 minutes. What is the probability that the two stages take over 80 minutes?
Uniformly distributed in the interval -0.5 cents to 0.5 cents. What is the probability that the round-off error exceeds 0.3 cents or is less than -0.3 cents?
A random sample of 36 cars showed a mean repair cost of $330, with a standard deviation of $120. What can you tell the city fathers?
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