type l ovens. A sample of 32 typel ovens has a mean repair cost of S89.74, with a standard st of S83.08, with a standard deviation of $11.67. Conduct a hypothesis test of the technician st for type i ovens and be the true mean repair cost for type il overs
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![A technician compares repair costs for two types of microwave ovens (type land type I), He believes that the repair cost for type I ovens is greater than the repair cost
for type ll ovens. A sample of 32 type I ovens has a mean repair cost of S89.74, with a standard deviation of S10.39. A sample of 49 type Il ovens has a mean repair
cost of S83.08, with a standard deviation of $11.67, Conduct a hypothesis test of the technician's claim at the 0.1 level of significance. Let ji be the true mean repair
cost for type I ovens and a be the true mean repair cost for type l ovens
Step 2 of 4: Compute the value of the test statistic. Round your answer to two decimal places.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0b36df39-ab49-4ea5-ae52-81cd20e2fcba%2F8ef78450-b4e2-4bd3-b9a7-e21b25c879cf%2Flz5ixsj_processed.jpeg&w=3840&q=75)
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- A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type Il ovens. A sample of 58 type I ovens has a mean repair cost of $84.57, with a standard deviation of $12.03. A sample of 72 type |l ovens has a mean repair cost of $81.69, with a standard deviation of $11.91. Conduct a hypothesis test of the technician's claim at the 0.1 level of significance. Let u be the true mean repair cost for type I ovens and uz be the true mean repair cost for type II ovens. Step 3 of 4: Determine the decision rule for rejecting the null hypothesis Hg. Round the numerical portion of your answer to two decimal places. E Tables E Keypad Answer Keyboard Shortcuts Previous Step Answers Reject Ho if Tutor Skip Try Similar Submit Answer O 2020 Hawkes Learning MacBook Air esc 80 888 F3 F4 FS F10 F11 F12 ! $ & + 1 2 3 6 8. 9 delete W R Y U { tab [ A F H J K s lock returr C V control option…A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type Il ovens. A sample of 35 type I ovens has a mean repair cost of $80.39. The population standard deviation for the repair of type I ovens is known to be $24.63. A sample of 31 type II ovens has a mean repair cost of $73.47. The population standard deviation for the repair of type Il ovens is known to be $10.42. Conduct a hypothesis test of the technician's claim at the 0.05 level of significance. Let µj be the true mean repair cost for type I ovens and µz be the true mean repair cost for type II ovens. Step 3 of 5: Find the p-value associated with the test statistic. Round your answer to four decimal places.In a study designed to test the effectiveness of Echinacea for treating upper repiratory tract infections inchildren, 337 children were treated with Echinacea and 370 other children were given a placebo. Thenumber of days of peak severity of symptoms for the Echinacea treatment group had a mean of 6 daysand a standard deviation of 2.3 days. The numbers of days of peak severity of symptoms for the placebogroup had a mean of 6.1 days and a standard deviation of 2.4 days (based on data from “Efficacy andSafety of Echinacea in Treating Upper Respiratory Tract Infections in Children,” by Taylor et al., Journalof the American Medical Associations, Vol. 290, No. 21).4. Construct a 95% CI for the true mean number of days of peak severity of symptoms for those whoreceive Echinacea treatment. We can use the z distribution to get the critical z value here, since thesample size is sufficiently large.Choose the correct answer below:a. [5.7534, 6.2466]b. [5.8737, 6.3463]c. [3.7000, 8.3000]d.…
- A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type II ovens. A sample of 35 type I ovens has a mean repair cost of $80.39. The population standard deviation for the repair of type I ovens is known to be $24.63. A sample of 31 type II ovens has a mean repair cost of $73.47. The population standard deviation for the repair of type II ovens is known to be $10.42. Conduct a hypothesis test of the technician's claim at the 0.05 level of significance. Let i be the true mean repair cost for type I ovens and µz be the true mean repair cost for type II ovens. Step 1 of 5: State the null and alternative hypotheses for the test.A paper reported that the freshman year weight gain for the students in a representative sample of 103 freshmen at a midwestern university was 5.8 pounds and that the standard deviation of the weight gain was 6.9 pounds. The authors also reported that 75.7% of these students gained more than 1.1 pounds, 17.4% maintained their weight within 1.1 pounds, and 6.8% lost more than 1.1 pounds. USE SALT (a) Based on the given information, explain why it is not reasonable to think that the distribution of weight gains for the population of freshmen students at this university is approximately normal. If the distribution of weight gains is approximately normal, for the sample standard deviation of s = 6.9 pounds and the sample mean of x = 5.8 pounds, we should see approximately ? ✓% of the weight gain observations be less than one standard deviation below the mean and we should see approximately? % of the weight gain observations be greater than one standard deviation above the mean. This…A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type Il ovens. A sample of 62 type l ovens has a mean repair cost of $86.71, with a standard deviation of $11.53. A sample of 61 type Il ovens has a mean repair cost of $79.77, with a standard deviation of $13.41. Conduct a hypothesis test of the technician's claim at the 0.05 level of significance. Let uj be the true mean repair cost for type I ovens and uz be the true mean repair cost for type Il ovens. Step 2 of 4: Compute the value of the test statistic. Round your answer to two decimal places. Answer O Tables E Keypad How to enter your answer Keyboard Shortcuts Previous Step Answers Submit Answer O 2020 Hawkes Learning MacBook Air 80 88 DI DD F1 F2 F4 F7 F8 F11 ! 23 $ & 1 2 3 4 + 7 8 9 Q W E R T Y U { [ A S D F H J K L C V B N M > ? otion command command option .. .-
- A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type l ovens is greater than the repair cost for type Il ovens. A sample of 62 type I ovens has a mean repair cost of $86.71, with a standard deviation of $11.53. A sample of 61 type Il ovens has a mean repair cost of $79.77, with a standard deviation of $13.41. Conduct a hypothesis test of the technician's claim at the 0.05 level of significance. Let , be the true mean repair cost for type l ovens and uz be the true mean repair cost for type l ovens. Step 3 of 4: Determine the decision rule for rejecting the null hypothesis Ho. Round the numerical portion of your answer to three decimal places. Answer E Tables E Keypad Keyboard Shortcuts Previous Step Answers Reject Ho if |2| Submit Answer © 2020 Hawkes Learning MacBook Air 80 器 88 DO esc FS ! & 1 2 3 4 5 6 7 8 9 delete { } Q E R Y P tab A S D G H J K L caps lock return > ? с V N M hift shift control option…A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type Il ovens. A sample of 59 type I ovens has a mean repair cost of $70.89, with a standard deviation of $24.74. A sample of 69 type Il ovens has a mean repair cost of $67.71, with a standard deviation of $18.77. Conduct a hypothesis test of the technician's claim at the 0.1 level of significance. Let u, be the true mean repair cost for type I ovens and u be the true mean repair cost for type Il ovens. Step 1 of 4: State the null and alternative hypotheses for the test. Answer E Tables E Keypad Keyboard Shortcuts Submit Answer O 2020 Hawkes Learning O Search for anything 803 PM 11/24/2020 hp prt se 144 delete home end Dg up %23 %24 2. 3 4. 6. 7 8 num !! +backspace lock Q W R. T U 7 home D K enter pause V 1 shift end alt alt ctri insA technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type Il ovens. A sample of 38 type I ovens has a mean repair cost of $89.77, with a standard deviation of $21.82. A sample of 54 type Il ovens has a mean repair cost of $86.89, with a standard deviation of $13.00. Conduct a hypothesis test of the technician's claim at the 0.05 level of significance. Let µi be the true mean repair cost for type I ovens and µ2 be the true mean repair cost for type Il ovens. Step 1 of 4: State the null and alternative hypotheses for the test. E Tables в Кеурad Answer Keyboard Shortcuts Но: и Ha: H1
- A technician compares repair costs for two types of microwave ovens (type I and type II). He believes that the repair cost for type I ovens is greater than the repair cost for type Il ovens. A sample of 58 type I ovens has a mean repair cost of $84.57, with a standard deviation of $12.03. A sample of 72 type Il ovens has a mean repair cost of $81.69, with a standard deviation of $11.91. Conduct a hypothesis test of the technician's claim at the 0,1 level of significance. Let u, be the true mean repair cost for type I ovens and u2 be the true mean repair cost for type Il ovens. Step 3 of 4: Determine the decision rule for rejecting the null hypothesis Ho. Round the numerical portion of your answer to two decimal places. E Tables E Keypad Answer Keyboard Shortcuts Previous Step Answers Reject Ho if Tutor Skip Try Similar Submit Answer 2020 Hawlkes Learning MacBook Air esc DII F9 F10 F11 %23 & 1 2 3 4 6 8 delete W R Y U { } tab P G H J K L caps lock return C V N M ? st control option…Researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic illness established two independent test groups. The first group consisted of 12 people with the illness, and the second group consisted of 14 people with the illness. The first group received treatment 1 and had a mean time until remission of 166 days with a standard deviation of 8 days. The second group received treatment 2 and had a mean time until remission of 163 days with a standard deviation of 9 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Construct a 90% confidence interval for the difference −μ1μ2 between the mean number of days before remission after treatment 1 ( μ1 ) and the mean number of days before remission after treatment 2 ( μ2 ). Then find the lower limit and upper limit of the 90% confidence interval. Carry your intermediate…Researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic illness established two independent test groups. The first group consisted of 15 people with the illness, and the second group consisted of 11 people with the illness. The first group received treatment 1 and had a mean time until remission of 187 days with a standard deviation of 6 days. The second group received treatment 2 and had a mean time until remission of 162 days with a standard deviation of 8 days. Assume that the populations of times until remission for each of the two treatments are normally distributed with equal variance. Construct a 90% confidence interval for the difference H₁-H₂ between the mean number of days before remission after treatment 1 (H₁) and the mean number of days before remission after treatment 2 (H₂). Then find the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three…
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