Homework Answers
Answer:
Given data
We have to find ,
= 0.93118-0.068825
= 0.862355
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Question 11 of 13 (1 point) Attempt 1 of Unlimited 6.3 Section Exercise Life of Smoke...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months,...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 6 months. Find the probability that a random sample of 35 smoke detectors will have a mean lifetime between 59 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to four decimal places and intermediate z-value calculations to two decimal places P (59 <...
Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5...
Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5 years or months, and the standard deviation is 7 months. Find the probability that a random sample of 29 smoke detectors will have a mean lifetime between 56 and 63 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to at least four decimal places and intermediate z-value calculations to two...
Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5...
Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5 years or months, and the standard deviation is 7 months. Find the probability that a random sample of 29 smoke detectors will have a mean lifetime between 56 and 63 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to at least four decimal places and intermediate z-value calculations to two...
Question 21 of 24 (1 point) 6.3 Section Exercise 8 A survey found that the American...
Question 21 of 24 (1 point) 6.3 Section Exercise 8 A survey found that the American family generates an average of 17.2 pounds of glass garbage each year. Assume the standard deviation of the distribution is 2.5 pounds. Find the probability that the mean of a sample of 58 families will be between 17.1 and 18.1 pounds. Assume that the sample is taken from a large population and the correction factor can be ignored. Round your final answer to four...
Question 15 of 20 (1 point Attempt 1 of 1 | View question in a popup...
Question 15 of 20 (1 point Attempt 1 of 1 | View question in a popup 2h 30m Romaining 7.3 Section Exercise 24 (calc) SAT scores: Assume that in a given year the mean mathematics SAT score was 467, and the standard deviation was 105. A sample of 59 scores is chosen. Use the TI-84 Plus calculator. Part 1 of 5 (a) What is the probability that the sample mean score is less than 4557 Round the answer to at...
need help with homework and please explain on rounding the slope to four decimal places ....
need
help with homework and please explain on rounding the slope to four
decimal places . thank you
11.2 Section Question 9 of 10 ( point) Attempt 1 of Unlimited View question in a popup Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in...
Question 4 of 5 (1 point) Question Attempt: 1 of 1 To plan for retirement, Kaitlin...
Question 4 of 5 (1 point) Question Attempt: 1 of 1 To plan for retirement, Kaitlin deposits $111 each month in an annuity that pays 7.8% interest, compounded monthly. Payments will be made at the end of each month. Find the total value of the annuity in 26 years. Do not round any intermediate computations, and round your final answer to the nearest cent. If necessary, refer to the list of financial formulas. Txo ? Save For Later Submit A...
Question 6 of 20 (1 point) Attempt 1 of Unlimited 3.2 Section Exercise Time to review:...
Question 6 of 20 (1 point) Attempt 1 of Unlimited 3.2 Section Exercise Time to review: The following table presents the time taken to review articles that were submitted for publication to a particular journal during a recent year. A few articles took longer than 6 months to review; these are omitted from the table. Consider the data to be a population. Time (Months) Number of Articles 0-0.9 1.0-1.9 2.0 - 2.9 3.0-3.9 4.0 - 4.9 5.0-5.9 Send data to...
Question 6 of 8 (1 point) Attempt 1 of Unlimited 3.2 Section Exercise Time to review:...
Question 6 of 8 (1 point) Attempt 1 of Unlimited 3.2 Section Exercise Time to review: The following table presents the time taken to review articles that were submitted for publication to a particular journal during a recent year. A few articles took longer than 6 months to review; these are omitted from the table. Consider the data to be a population. Number of Articles TA Time (Months) 0-0.9 44 16 1.0-1.9 2.0 - 2.9 3.0-3.9 17 20 4.0-4.9 12...
= Question 10 of 11 (1 point) Question Attempt: 1 of Unlimited Em A manufacturer claims...
= Question 10 of 11 (1 point) Question Attempt: 1 of Unlimited Em A manufacturer claims that the mean lifetime, H, of its light bulbs is 52 months. The standard deviation of these lifetimes is 6 months. Nine bulbs are selected at random, and their mean lifetime is found to be 51 months. Assume that the population is normally distributed. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 6 months. Find the probability that a random sample of 35 smoke detectors will have a mean lifetime between 59 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to four decimal places and intermediate z-value calculations to two decimal places P (59 <...
Question 21 of 24 (1 point) 6.3 Section Exercise 8 A survey found that the American family generates an average of 17.2 pounds of glass garbage each year. Assume the standard deviation of the distribution is 2.5 pounds. Find the probability that the mean of a sample of 58 families will be between 17.1 and 18.1 pounds. Assume that the sample is taken from a large population and the correction factor can be ignored. Round your final answer to four...
Question 15 of 20 (1 point Attempt 1 of 1 | View question in a popup 2h 30m Romaining 7.3 Section Exercise 24 (calc) SAT scores: Assume that in a given year the mean mathematics SAT score was 467, and the standard deviation was 105. A sample of 59 scores is chosen. Use the TI-84 Plus calculator. Part 1 of 5 (a) What is the probability that the sample mean score is less than 4557 Round the answer to at...
need
help with homework and please explain on rounding the slope to four
decimal places . thank you
11.2 Section Question 9 of 10 ( point) Attempt 1 of Unlimited View question in a popup Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in...
Question 4 of 5 (1 point) Question Attempt: 1 of 1 To plan for retirement, Kaitlin deposits $111 each month in an annuity that pays 7.8% interest, compounded monthly. Payments will be made at the end of each month. Find the total value of the annuity in 26 years. Do not round any intermediate computations, and round your final answer to the nearest cent. If necessary, refer to the list of financial formulas. Txo ? Save For Later Submit A...
Question 6 of 20 (1 point) Attempt 1 of Unlimited 3.2 Section Exercise Time to review: The following table presents the time taken to review articles that were submitted for publication to a particular journal during a recent year. A few articles took longer than 6 months to review; these are omitted from the table. Consider the data to be a population. Time (Months) Number of Articles 0-0.9 1.0-1.9 2.0 - 2.9 3.0-3.9 4.0 - 4.9 5.0-5.9 Send data to...
Question 6 of 8 (1 point) Attempt 1 of Unlimited 3.2 Section Exercise Time to review: The following table presents the time taken to review articles that were submitted for publication to a particular journal during a recent year. A few articles took longer than 6 months to review; these are omitted from the table. Consider the data to be a population. Number of Articles TA Time (Months) 0-0.9 44 16 1.0-1.9 2.0 - 2.9 3.0-3.9 17 20 4.0-4.9 12...
= Question 10 of 11 (1 point) Question Attempt: 1 of Unlimited Em A manufacturer claims that the mean lifetime, H, of its light bulbs is 52 months. The standard deviation of these lifetimes is 6 months. Nine bulbs are selected at random, and their mean lifetime is found to be 51 months. Assume that the population is normally distributed. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer...
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