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find p-value b) P(Z > z ) for a = .05 for a = .025 4) Reject Ho if p-value is less than The data must be a SRS from the population Pshyc 101 class as SRS for vision Soc 101 class as SRS to test attitudes towards the poor Different methods are needed for different designs SRS from Normal data, Shape of the population distribution and sample distribution Margin of error doesn"t cover all errors How small a P is convincing?
The pollsters can be 95% confident that the true proportion of adults who approve of human cloning is within what percentage of the estimated 11.7%?
Write the claim mathematically and identify H0 and Ha (b)Find the critical value(s) and identify the rejection region(s). (c) Find the standardized test statistic.
Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.
In 1965, a newspaper carried a story about a high school student who reported getting 9207 heads and 8743 tails in 17,950 coin tosses. Is this a significant discrepancy from the null hypothesis H 0 = 1/2.
The rest have no opinion. " Suppose that a a sample of 100 American adults is quizzed on the subject. What is the probability of the following events?
For a random sample of 40 people, what is the 95% confidence interval of the proportion of people who feel that there is too much violence on TV?
An extended-life light bulb claims the bulb has an average life of 12,000 hours, with a standard deviation of 500 hours. If the distribution is bell shaped and symmetrical
You're not sure if you should buy a stock and need to discover the probability of the stock having a positive return (based on one year).
Estimate u with an approximate 95% confidence interval. Estimate p, the proportion of measurements in the population that are greater than 30, with an approximate 95% confidence interval.
Determine a 90% confidence interval for the mean weight of all university male first-year students.
How many business majors would be required to evaluate mean salary to within 10 with 95% confidence if population standard deviation is %200.
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is:
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