claimed that in a bushel of peaches, less than 10% are defective. A sample of 400 peaches is examined and 50 are found to be defective. What is the null hypothesis?
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- Kiwi pukupuku (little spotted kiwi) are a native species of kiwi that inhabit the northern two-thirds of the North Island of Aotearoa, New Zealand. They are considered an endangered vulnerable species and it is estimated that there are about 35,000 individuals. In a random sample of n=35 female kiwi pukupuku, the average weight was 1.7kg. Perform a randomisation test to see if this sample provides evidence that the population mean weight of female kiwi pukupuku is more than 1.5kg. A randomisation distribution showing 500 randomisation statistics is given below. Fill in the blank below: "We assume ______________________________, when generating a randomisation distribution."Christine, a researcher in psychology and biobehavioral health, believes that city residents and residents of rural areas differ in how appealing they find owning a cat. A random sample of 109 people who live in San Antonio were surveyed and 59 identified themselves as a "cat person." A random sample of 108 people who live in the surrounding rural area were selected and 72 identified themselves as a "cat person." Conduct an appropriate hypothesis test at the a = 0.1 significance level to test Christine's claim. Round answers to 4 decimal places where appropriate. a. State the null and alternative hypotheses. Ho: ? ? ? ♥ H₁: ? b. What is the appropriate distribution to use for the hypothesis test? Select an answer ✓ ? ? ♥ c. Find the test statistic. Test Statistic: d. Determine the P-value: P-value: e. What decision results from the test? [Select an answerIn a random sample of 400 electrical components, 88 are found to be defective. You wish to test the null hypothesis that the population proportion of defective components is 20% versus the alternative hypothesis that the population proportion is not 20%.You choose a significant level of 5%. What is your statistical decision in this case?
- An ABC News poll asked adults whether they felt genetically modified food was safe to eat. 35% felt it was safe, 52% felt it was not safe, and 13% had no opinion.A random sample of 120 adults was asked the same question at a local county fair. 40 people felt that genetically modified food was safe, 60 felt that it was not safe, and 20 had no opinion.At the 0.01 level of significance, is there sufficient evidence to conclude that the proportions differ from those reported in the survey? What is an apropriate alternate hypothesis for this problem? What is the critical value for this problem? What is the expected value for no opinion people? What is the Chi squared value for this problem? What is the appropriate decision?Based on their records, a hospital claims that the proportion, p, of full-term babies born in the community that weigh more than 7 pounds is 36%. A pediatrician who works with several hospitals in the community would like to verify the hospital's claim. In a random sample of 180 babies born in the community, 46 weighed over 7 pounds. Is there enough evidence to reject the hospital's claim at the 0.01 level of significance? Expahel Perform a two-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 hypothesis H and the alternative hypothesis H. H : 0 H, :0 (b) Determine the type of test statistic to use. O-0 OSO (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the p-value. (Round to three or more decimal places.) (e) Can we reject the claim that the proportion of full-term babies born in the community that…As winter is here and I love planting my winter garden. I have planted my winter vegetables ( Broccoli, Artichoke, Cauliflower, ect.), on average 10 neighbors plant a garden during winter. I asked 20 neighbors of they were going to plant their winter gardens and 12 of them said yes. Test this hypothesis at .05 significance level. Assume a random sample.
- an automobile engineer claims that 1in 10 automobile accidents are due to driver fatigue . if a random sample of 5 accidents observed , then the probabilty that 3 accidentsare due to drive fatigue isChristine, a researcher in psychology and biobehavioral health, believes that city residents and residents of rural areas differ in how appealing they find owning a cat. A random sample of 109 people who live in San Antonio were surveyed and 59 identified themselves as a "cat person." A random sample of 108 people who live in the surrounding rural area were selected and 72 identified themselves as a "cat person." Conduct an appropriate hypothesis test at the a = 0.1 significance level to test Christine's claim. Round answers to 4 decimal places where appropriate. a. State the null and alternative hypotheses. Ho: p. H₁: p. b. What is the appropriate distribution to use for the hypothesis test? Z (Normal) c. Find the test statistic. Test Statistic: -1.9593 X d. Determine the P-value: op. P-value: 0.0501 X O p.A local McDonald's manager will return a shipment of hamburger buns if more than 10% of the buns are crushed. A random sample of 81 buns finds 13 crushed buns. A 5% significance test is conducted to determine if the shipment should be accepted. The p value for this situation is:
- Suppose that in a random selection of 100 colored candies, 25% of them are blue. The candy company claims that the percentage of blue candies is equal to 22%. Use a 0.05 significance level to test that claim. O A. Ho p=0.22 Hy p>0.22 O B. Ho p=0.22 H p 0 22 O C. Ho pt0.22 H p=022 O D. Ho p=0.22 H1 p<0.22 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed ) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is | (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. O A. Fail to reject Ho. There is not sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 22% O B. Reject Hn. There is sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 22% OC. Fail to reject Ho. There is sufficient evidence to warrant rejection of the claim that the…One cable company claims that it has excellent customer service. In fact, the company advertises that a technician will arrive within 45 minutes after a service call is placed. One frustrated customer believes this is not accurate, claiming that it takes over 45 minutes for the cable technician to arrive. The customer asks a simple random sample of 25 other cable customers how long it has taken for the cable technician to arrive when they have called for one. The sample mean for this group is 47.9 minutes with a standard deviation of 7.6 minutes. Assume that the population distribution is approximately normal. Test the customer's claim at the 0.01 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : μ = 45 Ha:μ 45According to the 2010 Census, 16% of people in the United States are of Hispanic or Latino origin. One Macon County supervisor believes her county has a lower proportion of Hispanic people than the nation as a whole and questions the validity of the Census. She looks at the county's most recent survey data, a random sample of 900 county residents, and found that 90 of those surveyed are of Hispanic or Latino origin.a. Identify an appropriate null and alternative hypothesis for a test to be conducted by the county supervisor.b. Calculate a P-Value and explain its meaning in context of this scenario.c. Based on your P-Value, what conclusion might be made regarding the null hypothesis