A manufacturer knows that their items have a normally distributed lifespan, with a mean of 12.8 years, and standard deviation of 3 years. The 6% of items with the shortest lifespan will last less than how many years? Give your answer to one decimal place. Submit Question
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- Cars on I-40 have a mean speed of 73 MPH at a certain mile marker, with a standard deviation of 8 MPH. What Percentage of Cars averaged at least 78 mph?A manufacturer knows that their items have a normally distributed lifespan, with a mean of 2.7 years, and standard deviation of 0.9 years. The 3% of items with the shortest lifespan will last less than how many years? Give your answer to one decimal place. yearsChapter 2, Section 3, Exercise 078 9,12,15,18,19,21,25,27,28,32,34 Using StatKey or other technology, find the following values for the above data.Click here to access StatKey.(a) The mean and the standard deviation.Round your answers to one decimal place.mean =standard deviation =(b) The five number summary.Enter exact answers.The five number summary is (, , , , )
- I was wondering if these answers are correct. Explain. A study by Quadrant Information Services commissioned by Insure.com calculated auto insurance rates for each of the 50 states; and as a result, the average annual rate for the United States was $1,317. Suppose annual rates of auto insurance in the United States are normally distributed with a standard deviation of $324. According to MoneyGeek, a state minimum auto insurance policy in Florida costs an average of $1123 per year and the average cost of full coverage car insurance in Florida is $2208. What percentage of policies cost less than the Florida state minimum policy of $1123? z = (x - mu) / sigma z = (1123-1317)/324 z= -0.59876543 P-value from Z-Table: P(x<1123) = 0.27466 The answer is less than I expected. After using a z-table to determine the score it results in 27% of policies that are less than the minimum policy of 1123. What percentage of auto insurance rates would be less than $1,200? z = (x - mu) / sigma…Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to Pa1, the 91st percentile. This is the temperature reading separating the bottom 91% from the top 9%. Click to view page 1 of the table Click to view page 2 of the table. Which graph represents Pa,? Choose the correct graph below. OD. Oc. OB. OA. Ay The temperature for P91 is approximately . (Round to two decimal places as needed.) XLSX Click to select vour answerls). 33283.xls Exit Honorlock 22 MacBook Air 吕0 000 000 F4 F3 F6 F7 F8 F9 FIC #3 2$ * 3 4 5 6 7 8 E R Y UPlease awnser following question 2. An overbearing mother recorded the number of minutes her daughter spentexercising over 4 days. Here are the number of minutes per day:2, 9, 14, 15a. Write out the formula for: mean of xb. Use the formula to evaluate mean of x, by plugging in the values and manually carrying outthe calculation.c. Write out the formula for standard deviation. Please solve a, b and c
- A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.8 years, and standard deviation of 2.8 years. The 7% of items with the shortest lifespan will last less than how many years? Give your answer to one decimal place. Question Help: Video Submit QuestionA Moving to another question will save this response. Question 5 The national scores on an exam were normal distributed with a mean of 428 and a standard deviation of 113. Approximately what percent of those taking this test had scores between 315 and 541? A Moving to another question will save this response. Session 10 GN.docx MacBook ProAssume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P34, the 84th percentile. This is the temperature reading separating the bottom 84% from the top 16%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents P ? Choose the correct graph below. 84 A. В. OC. D. Ay X The temperature for P84 is approximately (Round to two decimal places as needed.)