Interpret the following graph Versus Fits (response is time) Normal Probability Plot (response is time) 99 95 1. 90 80 70 E 60 50 & 40 -3 30 20 -4 10 -5 10 15 20 25 30 35 Fitted Value 1 -5.0 -2.5 0.0 2.5 5.0 7.5 Residual Residual versus fits Percent jenpisay
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- The lifespan of a laptop battery normally distributedIf the mean lifespan of a battery 4 years with a standard deviation of 1.6 yearswhat is the probability that the next laptop battery you purchase will last between 3.5 and years? 44.81%; 84.79% 15.21% 55.19\%Numb 3. 6.3 Please round 4 dec places.The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in 8 randomly selected cities. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers Complete parts (a) through (c) below. 68 22 79 09 69.71 84.91 80.91 85.76 100.24 97.41 O Click the icon view the table of critical t-values. (a) Determine a point estimate for the population mean travel tax. A point estimate for the population mean travel tax is $ (Round to two decimal places as needed.)
- Lost connection with tutor need somehelpDo college students enjoy playing sports just as much as watching sports? A researcher randomly selected ten college students and asked them to rate playing sports and watching sports on a scale from 1 to 10 with 1 meaning they have no interest and 10 meaning they absolutely love it. The results of the study are given below. Playing vs. Watching Sports Data Play Watch 4 1 2 1 1 1 2 1 7 5 8 1 1 3 6 4 3 3 1 1 Assume a Normal distribution. What can be concluded at the the a = 0.05 level of significance level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer Select an answer ✓ H₁: Select an answer ✓ Select an answer ✓ b. The test statistic ? ✓ = c. The p-value d. The p-value is ? ✓ a e. Based on this, we should f. Thus, the final conclusion is that ... = Select an answer ✓ (please enter a decimal) Select an answer (Please enter a decimal) (please show your answer to 3 decimal places.) (Please show your…Amy needs to plan inventory ahead for her business and she needs to know how the demand for her products would be like for the next week. Suppose, based on experience, she knows that the demand for her products follows a normal distribution with a mean of 300 units and and a standard deviation of 60 units. What is the probability, approximately, that Amy will face a demand of less than 180 units? 5% 16% 2.5% 0%
- A highschool teacher is interested in examining the math performance of one particular child, Mike, he has observed over several years. The highschool teacher has the mean and standard deviation for each year's maths test along with Mike's score on each test. Year Mean SD Mike's score 2018 90.5 5.1 96 2019 88.7 8.8 95 2020 69.5 3.4 78 Calculate the appropriate statistic to evaluate in which year Mike did his best in the math test relative to the other children tested over the years. To answer this question, we would need to compute a Q1. ABCD for each year, which would be Q2. ABCD for 2018, Q3. ABCD for 2019, and Q4. ABCD for 2020. This would mean that Mike's best math performance was in Q5. ABCD relative to the other children tested over the three years. In that year, he performed better than Q6. ABCD of the other children. Possible answers for Q4:A) -2.50B) -1.67C) 1.67D) 2.50 Possible answers for Q5:A) 2018B) 2019C) 2020D) Cannot tell…A highschool teacher is interested in examining the math performance of one particular child, Mike, he has observed over several years. The highschool teacher has the mean and standard deviation for each year's maths test along with Mike's score on each test. Year Mean SD Mike's score 2018 90.5 5.1 96 2019 88.7 8.8 95 2020 69.5 3.4 78 Calculate the appropriate statistic to evaluate in which year Mike did his best in the math test relative to the other children tested over the years. To answer this question, we would need to compute a Q1. for each year, which would be Q2. for 2018, Q3. for 2019, and Q4. for 2020. This would mean that Mike's best math performance was in Q5. relative to the other children tested over the three years. In that year, he performed better than Q6. of the other children. Possible answers for Q1:A) performanceB) t-scoreC) raw scoreD) z-score Possible answers for Q2:A) -1.08B) 0.63C) 1.08D) -0.63 Possible answers for…A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 36,000 miles and a standard deviation of 2100 miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately 10% of the tires? Question content area bottom Part 1 Tires that wear out by enter your response here miles will be replaced free of charge.
- A study discovered that Americans consumed an average of 13.2 pounds of chocolate per year. Assume that the annual chocolate consumption follows the normal distribution with a standard deviation of 3.2 pounds. d. What is the probability that an American will consume exactly 12 pounds of chocolate next year? enter your response here (Round to four decimal places as needed.) Part 5 e. What is the annual consumption of chocolate that represents the 80th percentile? The 80th percentile is represented by an annual consumption of enter your response here pounds of chocolate. (Type an integer or decimal rounded to one decimal place as needed.)Website 1 A market analyst wants to know if the new website he designed is showing increased page views per visit and calculates the summary statistics in the table to the right. Assume that the new website is website 1 and the old website is website 2. Test the hypothesis that the mean number of page views from the two websites is the same. You may assume that the number of page views from each website follaw a Normal distribution. Complete parts a through e below. Website 2 n, =90 y, =6.7 = 95 =63 55 -5.6 t-0.490 a) Calculato the Pvalun of the statiatic given that the approximation formula gives df = 182.6. The Pvalue is (Round to three decimai places as needed.) b) Caloulate the P-value of the statistic using the rule that df minin, - 1, n-1) The Pvalue is (Round to three decimal places as needed.) e) What do you conclude at a=0,107 H, for both cases. There sufficient evidence to reject the caim that the mean number of page visits is the same for the two websites, in favor of the…00 %24 In the Standard Normal Distribution, what is the probability of getting a z-score between -.54 and 1.68? Write both your answer and your Excel formula here. ovi ima pod ovie ...-4 ovie unɔod ts 150 132 OCT 25 tv MacBook Pro esc # & $ % 2 4. 8. R caps lock H
