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Question: A normal distribution has a standard deviation of 1. We want to verify a claim that the mean is greater than 12. A sample of 36 is taken with a sample mean of 12.5.
H0: μ ≤ 12
Ha: μ > 12
The p-value is 0.0013
Draw a graph that shows the p-value.
classify the following random variables as discrete or continuousx the number of automobile accidents per year in
International food survey, part 2. Look again at the data from the Gf K Roper Worldwide survey on food attitudes in Exercise 45. a) If we select a respondent at random, what's the probability we choose a person between 13 and 19 years old who ag..
At western university the historical mean of scholarship exam scores for freshman applications is 900. A historical population standard deviation = 180.
Construct a scatter plot for these data.- Find the estimated regression line. Add a graph of the estimated regression line to the scatter plot in part (a).
A hockey club has 7 forwards, 5 defensemen, and 3 goalies. Each can play only in his designated subgroup. A coach chooses a team of 3 forwards, 2 defense, and 1 goalie.
At a local university, sample of 49 evening students was selected in order to determine whether the average age of evening students is significantly different from 21. The average age of students in the sample was 23 with a standard deviation of 3..
Based on point estimate of each sample. Explain how confidence intervals will change depending on whether population standard deviation is known or unknown.
harry phelps owner of harrys clothing cupboard is considering a move from downtown to a new shopping mall. because he
What are planned comparisons? Why do researchers making planned comparisons need to make the Bonferroni correction? If a researcher is making four planned comparisons using the .05 significance level
A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof.
Suppose two residents participate in the program (each for 3 weeks= 21 days) and cart review inds a total of 20 medical erros made by the two residents combined. Rate = 20 errors in 21 days per 2 residents .95 error per day per 2 resdients or .4762..
An office complex is lit by lightbulbs made by 2 companies, with 60% of the bulbs in use made by company A and 40% by company B. The lifetime (in years) for the 2 companies' bulbs are continuous uniform random variables Ta and Tb, respectively. Ho..
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