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Thirteen percent of the adult population is left-handed. Of the first 44 presidents of the United States, seven are left-handed. Is there evidence that the presidents represent a biased sample of the population? Please explain
six applications for admission to a local university are checked and it is determined whether each applicant is male
Mmore than 520gms, within 10grms of the stated weight & weight that only 5% of bottles contain less than this weight?
When using a t test for dependent means, show the steps involved in calculating the estimated population variance based on scores in this sample:
If the probability that she dies in the coming year is 0.001, what is the expected gain for the insurance company?
A department store, on average, has daily sales of $28,707.47. The standard deviation of sales is $1000. On Tuesday, the store sold $34,650.77 worth of goods. Find Tuesday's z score. Was Tuesday an unusually good day?
a student curious about the average number of chocolate chips in a commercial brand of cookie estimated the standard
If the restaurant stocks 400 hamburgers and 150 chicken sandwiches for a given day, what is the probability that it will run out of hamburgers or chicken sandwiches (or both) that day? Assume that the demand for hamburgers and the demand for chick..
a fair die is thrown until the sum of the results of the throws exceeds 6. the random variable x is the number of
the following data show the daily closing prices in dollars per share for a stock. period price 1 82.87 2 83.00 3
q1. determine whether a statistical analysis should best involve examination of the population or of a sample in each
Sketch the distribution of sample means for sample of n = 25 scores from this population.
Can researcher conclude that humidity has significant effect on eating behavior? Use a two-tail test with α = .05. Calculate estimated Cohen's d and r2 to measure size of treatment effect.
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