vent occurs at least once out of ne trials? [Express your answer to 3 decimal laces]
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An event has a probability p(e) = 0.7. What the is the probabilty that the
event occurs at least once out of ne trials? [Express your answer to 3 decimal
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- According to the Minnesota Baccalaureate Psychomotor Skills Test (2008) your patient has significantly greater psychomotor skills than the average patient. Which of the following results would be appropriate to see with this finding? a-Z=1.36 (p=0.01) b-Z=5.67(p=0.08) c-Fail to reject the null d-Z= -1.98 (p=0.02) why is the answer a? and what is a trick to remember with p values? i understand that it is 0.05 or 5% chance of errorAn SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the prep course)-(verbal SAT scores after taking the prep course). Use a significance level of a = 0.01 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course. 1 234567 520 570 540 380 370 490 450 Student Score on first SAT Score on second SAT 540 600 610 470 410 510 480 Step 1 of 5: State the null and alternative hypotheses for the test. Answer 0 Ho: Md 0 Ha Ma IA IV V A || < = Copy Data Tables Keypad Keyboard ShortcutsThe commercial for the new Meat Man Barbecue claims that it takes 14 minutes for assembly. A consumer advocate thinks that the assembly time is lower than 14 minutes. The advocate surveyed 12 randomly selected people who purchased the Meat Man Barbecue and found that their average time was 13.5 minutes. The standard deviation for this survey group was 2.1 minutes. What can be concluded at the the a = 0.01 level of significance level of significance? You may assume the data are normally distributed.
- NoneYou are a consumer psychologist interested in holidy 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 A) State your non-directional null and alternative hypothesisThe agriculture extension office wants to test the claim that GMO carrots are longer than Organic carrots. What kind of hypotheisis test is this? O 1 Proportion z-test 2 Proportions z-test 1 Mean t-test 2 Means Matched Pairs t-test 2 Independent Means t-test Which hypotheses do we want to test? O Họ: H1 = H2 HẠ: H1= H2 O Họ: H1 = H2 HA: H1 = H2 O Ho: H1 = H2 HA: H1> H2 O Ho: H1 = H2 HA: H1< H2
- The average wait time to get seated at a popular restaurant in the city on a Friday night is 13 minutes. Is the mean wait time greater for men who wear a tie? Wait times for 11 randomly selected men who were wearing a tie are shown below. Assume that the distribution of the population is normal. 12, 13, 13, 15, 13, 11, 14, 13, 15, 11, 15 What can be concluded at the the a = 0.01 level of significance level of significance?The average fruit fly will lay 394 eggs into rotting fruit. A biologist wants to see if the average will change for flies that have a certain gene modified. The data below shows the number of eggs that were laid into rotting fruit by several fruit flies that had this gene modified. Assume that the distribution of the population is normal. Round your mean and standard deviation to three decimal places when doing these calculations. 376, 400, 402, 362, 386, 400, 368, 391, 399, 407, 384, 384, 371, 371 Download CSV What can be concluded at the the a = 0.01 level of significance level of significance?Before the furniture store began its ad campaign, it averaged 222 customers per day. The manager is investigating if the average is smaller since the ad came out. The data for the 14 randomly selected days since the ad campaign began is shown below. Round your mean and standard deviation to three decimal places when doing these calculations. 224, 211, 206, 206, 232, 189, 222, 197, 220, 210, 212, 213, 208, 189 Download CSV Assuming that the distribution is normal, what can be concluded at the a = 0.01 level of significance?
- 7Is the average time to complete an obstacle course longer when a patch is placed over the right eye than when a patch is placed over the left eye? Thirteen randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Time to Complete the Course Right 46 48 42 50 46 43 50 41 Left 45 46 42 50 46 39 50 37 Assume a Normal distribution. What can be concluded at the the a = 0.05 level of significance level of significance?The proportion of people that own cats is 80%. A veterinarian believes that this proportion is significantly different than 80% and surveys 500 people. Test the veterinarian's claim at the a = 0.05 significance level. Preliminary: a. Is it safe to assume that n ≤ 0.05 of all subjects in the population? No Yes b. Verify np(1 - p) ≥ 10. Round your answer to one decimal place. np(1 - p) Test the claim: a. The null and alternative hypotheses are O H : }=0.8 Haμ0.8 Ho p≤0.8 Ha p > 0.8 . Ho: p=0.8 Ha: p 0.8 Ο Η : μ 0.8 Η : μ Σ 0.8 Ha : μ < 0.8 Ho: p=0.8 Ha p < 0.8 b. The test is Select an answer c. Based on the sample of 500 people, 75% owned cats. Calculate the test statistic. Round to two decimal places. x = d. Calculate the p-value. Round to four decimal places. e. Make a decision. Fail to reject the null hypothesis Reject the null hypothesis f. Make a conclusion. There is not sufficient evidence that the proportion of people who own cats is significantly different. There is sufficient…
