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According to GEICO less than 25% of auto accidents involve teenagers. According to Maryland records 100 of 500 auto accidents involved teenagers. Using a 0.05 significance level, answer the following:
a. What is the appropriate hypothesis test to do the analysis?
b. What is the null hypothesis and the alternative hypothesis?
c. What is the test statistic ((two decimal places)?
d. What is the p-value (3 decimal places)?
e. Compare the p-value and the signifcance level alpha (reject or fail to reject)
f. Do the results support Geico's claim?
Suppose that you are interested in determining the relation between the students average SAT scores [x] and their freshman GPA [y].
1. Discuss what classical artistic traditions are present in these two images. 2. How did the artists of these portraits use color, line, texture and proportion to show the heavenly, divine quality of the subjects?
The standard deviation of the distribution of means of change scores is 2.0 and the mean change score for the sample studied is an increase of 5.2. What is the t score?
As a condition of employment, Fashion Industries applicants must pass a drug test. Of the last 220 applicants 14 failed the test. Develop a 99 percent confidence interval for the proportion of applicants that fail the test.
(a) What is the sample proportion ˆp of college students at OSU who worked last summer? (b) What is the approximate distribution of the proportion ˆp of college students at OSU who worked last summer?
The mean number of passengers per cruise is 1,820 and the standard deviation is 120.
Are there circumstances in which a pie chart cannot be drawn, but a bar graph could be drawn? What are these circumstances?
1. an experiment has four equally likely outcomes e1 e2 e3 and e4.a. what is the probability that e2 occurs?b. what is
In a Sgallop poll of 1012 randomly selected adults, 9% said cloning of humans should be allowed. Use a .05 significance level to the test claim that less than 10% of all adults said that cloning should be allowed.
it is hypothesized that there are fluctuations in norepinephrinenelevels wich accompany fluctuations in affect with
Find appropriate summary statistics.- Write a brief description of the school's mail deliveries.- What percent of the days actually lie within one standard deviation of the mean? Comment.
The lengths of time bank customers must wait for a teller are normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute. 1) What proportion of bank customers waits between 3 and 4 minutes
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