true?What error we make when we fail to reject the null hypothesis when the alternative is actuallyA. Type IB. Type IIC. No errorConsider the null and alternative hypothesis: Ho: #₁ = µ2, H₂ ₁2. For which of thefollowing 95% confidence intervals would you reject the null hypothesis?A. (-1.5, 2.5)B. (0, 2.5)C. (0.1, 2.5)Suppose you conduct a hypothesis test Ho: P₁ - P2 = 0 versus Ha: P1 P2 > 0 and obtain atest statistic z = 2.5. Which of the following is the correct Matlab command for the p-value?A. normcdf (2.5)B. 1-normcdf (2.5)C. 2*normcdf (2.5)D. 2*(1-normcdf (2.5))

Here we will use type 1 error and type 2 error definition. And hypothesis testing using confidence…

Answered: true? What error we make when we fail…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The p-value for a two-sided hypothesis test of the null hypothesis Họ: H = 12 is 0.07. Which of the following confidence intervals would include the value 12? 1. 90% Confidence Interval 2. 95% Confidence Interval 3. 99% Confidence Interval Impossible to Determine 1 only Ob. 2 and 3 Oc. 1 and 2 Od. 1, 2, and 3 Oe.
QUESTION 10 A 95% confidence interval of the mean is (10. 15). The result of testing Ho:u=12 against H:uz12. at 0.05 level of significance, will be O There is insufficient information to make any conclusions about the hypothesis test O Do not reject the the null hypothesis because 12 is less than 15 Reject the null hypothesis because 12 is more than 10 Do not reject the null hypothesis because 12 is between 10 and 15 27
You are conducting a test of independence to see if getting the flu is independent of whether or not you got a flu shot. Use a = 0.05. Report all answers accurate to four decimal places. Here is the sample data. Category Got Flu Shot Did not get Flu Shot Category Got Flu Shot The expected observations for this table would be: Got the Flu Did not get Flu Shot The resulting (O - E)² E Got the Flu 18 51 Category Got Flu Shot Did not get Flu Shot Did not get the Flu 118 19 Got the Flu for finding the test are: Did not get the Flu What is the p-value for this test-statistic? P-Value = Did not get the Flu What is the chi-square test-statistic for this data? (add the results from the previous table) x² =
Question 3 The following questions are based on confidence intervals. iid Ν μ, σ") with μER (a) and o? is unknown. Calculate a 90% confidence interval for u. Let, (4.00, 5.26, 4.84, 6.77, 5.23, 5.64, 3.84, 6.4,3 3.35, 4.28) (b) Interpret the the confidence interval in (a).
hh
What is the critical t score if you are testing a one-tailed hypothesis, α level of .05 with df = 36? a. 1.671 b. 2.026 c. 2.028 d. 1.697
ATTEMPT ONLY IF YOU ARE 100% SURE
QUESTION 6 A 959% confidence interval of the mean is (11, 17). The result of testing He:H= 13 against H:u#13. at 0.05 level of significance, will be O Do not reject the nulhhypothesis because 13 is between 11 and 17 OThere is insufficient information to make any conclusion about the hypothesis test O Reject the null hypothesis because 13 is more than 11 O Do not reject the the null hypothesis because 13 is less than 17 QUESTION
- Construct the 99% confidence interval for the difference μ₁ −μ₂ when x₁=476.88, x₂=318.32, s₁=42.11, s₂=26.80, n₁=19, and n₂=22. Use tables to find the critical value and round the answers to at least two decimal places. A 99% confidence interval for the difference in the population means is
When computing a confidence interval for the slope of a regression line, a plot of the residuals versus the fitted values can be used to check which of the following conditions? The variables x and y are inversely related. The variables x and y are inversely related. A The standard deviation of y does not vary as x varies. The standard deviation of y does not vary as x varies. B The correlation is not equal to zero. The correlation is not equal to zero. C The observations are independent. The observations are independent. D The confidence interval contains zero.
You are a consumer psychologist interested in holiday spending. A national census reports that the American family spent an average of µ = $81 for Halloween candy and costumes last year. A sample of N = 16 families this year produced a mean of $85 with s = 20. Based upon your obtained t and critical t, can you reject the null? Yes No Not enough information to decide
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