Find the P-value for a left-tailed hypothesis test with a test statistic of z= -1.17. Decide whether to reject Ho if the level of significance is α = 0.10. Com P-value = (Round to four decimal places as needed.)

Question 3 The combined SAT scores for the students at a local high school are normally distributed with a mean of 1466 and a standard deviation of 310. The local college includes a minimum score of 784 in its admission requirements. What percentage of students from this school earn scores that satisfy the admission requirement? P(X> 784) = % > Next Question Enter your answer as a percent accurate to 1 decimal place (do not enter the "%" sign). Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

what does it mean if P-Value is extremely low?

Where are the critical region(s) located in a z-distribution if a one-tailed hypothesis test was conducted to see if a treatment led to a decrease using an alpha = 0.0668 Report the complete z-score (no rounding)

Chebyshev's theorem states that for any set of numbers, the fraction that will lie within K standard deviations of the mean is at least 1-1/k^2. Use this theorem to find the fraction of all the numbers of a data set that must lie within 3 standard deviations from the mean. At least____of all numbers must lie within 3 standard deviations from the mean. ( Type an integer or a fraction)

TRUE OR FALSE>Chi-square is one of the most commonly used forms of parametric statistics.

mean of x = 2.882, standard deviation = 1.634  Mean of y = 2.588, standard deviation = 0.246 The correlation coefficient is 0.159 Predict the GPA of someone who studies 10 hours per week.

Question 8 of 10 > Select all of the true statements about the standard deviation of a quantitative variable. Standard deviation represents how far a group of values are from the mean of those values, on average. OStandard deviation is always a nonnegative value. If a set of values has a mean of 0 and a standard deviation that is not 0, then adding a new data point with a value of 0 will have no effect on the standard deviation. Standard deviation is resistive to unusual values. Changing the units of a set of values (e.g., converting from inches to feet) does not affect its standard deviation. The standard deviation of a set of values is equal to 0 if and only if all of the values are the same. about us privacy policy terms of use contact us help careers

Find the standard error of the sample mean such that we have 60 random samples with mean 25 and standard deviation of 13. (Round to 3dp)

Citrus F v is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage uver the years for Citrus cars has been about 1600 miles per month. Recently, though, Citrus purchased thousands of new cars, and the company claims that the average mileage of its cars is now less than in the past. To test this, a random sample of 21 recent mileages of Citrus cars was taken. The mean of these 21 mileages was 1553 miles per month, and the standard deviation was 241 miles per month. Assume that the population of recent monthly mileages of Citrus cars is normally distributed. At the 0.05 level of significance, can it be concluded that the mean recent monthly mileage, u, of Citrus cars is less than 1600 miles per month? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null…