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Identify the indicated values or interpret the given display. In a survey of 703 randomly selected workers, 15.93% got their job's through news paper ads. Consider a hypothesis test that uses a 0.05 significance level to test the claim that less than 20% of workers get their jobs through newspaper ads.
a. What is the test statistics?
b. What is the critical value?
c. What is the p-value?
d. What is the conclusion?
The nation health department has concerns with the chlorine level of 0.4% mg/mL at a local water park raises to unsafe level.
36 values given here are based on summary statistics from research by cumming. Do you think that these data are normally distributed?
The data below show the average daily high temperature for Chicago, Illinois, for twelve recent spring and summer months. Create a stem-and -leaf diagram for the data.
The lifetime of a 2-volt non-rechargeable battery in constant use has a Normal distribution with a mean of 516 hours and a standard deviation of 20 hours. The proportion of batteries with lifetimes exceeding 520 hours is approximately.
Use the permutations rule to determine the total number of different ways the winners can be drawn.
Use relative frequencies to estimate the probability that a seed will germinate, What is your estimate?
Which is the probability that the median of the sample is between $17 and $20?
Find out the suitable critical value(s) for this situation given a 0.05 significance level. Find out/compute the value of sample test statistic.
A group of students collected data at the Cedar Point amusement park and reported that the "wait time" to ride the "Top Thrill Dragster" roller coaster is consistently distributed within a range of 40 minutes to 90 minutes.
Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
How strong is the evidence against the company's claim? Based on these data, the P -value of the appropriate test
Determine the mean and standard deviation of the data. What percentage of the data lies within one standard deviation of the mean value?
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