Question

Assuming the life expectancy of horses follows the normal distribution with a mean of 27 years...

Assuming the life expectancy of horses follows the normal distribution with a mean of 27 years and a standard deviation of 1.2 years. a) If we randomly select 13 horses, what is the probability that the average lifetime of these horses is greater than or equal to 28 years. b) In a group of 35 horses, approximately how many of them will live between 25 to 30 years? c) Knowing that a horse dies earlier than 63% of all horses, approximately how many years does this horse live?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
the average life expectancy for US women is approximately normally distributed with a mean of 83.7...
the average life expectancy for US women is approximately normally distributed with a mean of 83.7 years old with a σn-1 = 3.1 years. What is the z-score for a women how lived to the age of 92.7? What percentage of US women lived more than 90 years old? What percentage of US women live less than 85 years old? What percentage of US women will live within + 2 years of the average? What precent age of US women...
How Long Will You Live? Many companies utilize life expectancy data to calculate items such as...
How Long Will You Live? Many companies utilize life expectancy data to calculate items such as life insurance premiums or retirement benefits. The IRS is no exception. Use the data in the following table to answer the questions below. IRS Life Expectancy Table Current Age Expected Number of Additional Years to Live 35 47.3 40 42.5 1) The data given in the table is (approximately) linear. Using ordered pairs of the form (current age, number of additional years you are...
Country Life expectancy​ (years) Infant mortality​ (deaths per​ 1,000 live​ births) 1 58 105 2 57...
Country Life expectancy​ (years) Infant mortality​ (deaths per​ 1,000 live​ births) 1 58 105 2 57 106 3 60 64 4 57 66 5 58 70 6 63 56 7 61 45 8 65 30 9 62 49 10 66 42 11 64 28 12 79 10 13 72 6 14 79 4 15 80 4 16 75 1 b. Compute r and r2. Based on the value for r2​, determine how much of the variation in the variable can...
Age ( Years) Obesity Deaths Mid-Point Age Life Expectancy at Age Years of Life Lost per...
Age ( Years) Obesity Deaths Mid-Point Age Life Expectancy at Age Years of Life Lost per Person Total Year of Life Lost 15-24 7 20 79 59 413 25-34 12 30 80 35-44 25 40 81 45-54 55 82 55-64 70 83 TOTAL 169 Calculating Total Years of Life Lost due to Obesity in the US Questions Complete the Table above. Show your work What is the year of life lost for the age group 44-54? Show your work What...
Along with interest rates, life expectancy is a component in pricing financial annuities. Suppose that you...
Along with interest rates, life expectancy is a component in pricing financial annuities. Suppose that you know that last year life expectancy was 77 years for your annuity holders. Now you want to know if your clients this year have a longer life expectancy, on average, so you randomly sample n=20 of recently deceased annuity holders to see actual age at death. Using a 5% level of significance, test whether or not the new data shows evidence of your annuity...
A relay microchip in a telecommunications satellite has a life expectancy that follows a normal distribution...
A relay microchip in a telecommunications satellite has a life expectancy that follows a normal distribution with a mean of 93 months and a standard deviation of 3.2 months. When this computer-relay microchip malfunctions, the entire satellite is useless. A large London insurance company is going to insure the satellite for 50 million dollars. Assume that the only part of the satellite in question is the microchip. All other components will work indefinitely. (a) For how many months should the...
  The lifetime of a tire can be represented by a normal distribution with an average of...
  The lifetime of a tire can be represented by a normal distribution with an average of 35,000 kilometers and a standard deviation of 4,000 kilometers. Find the probability that the time of a tire is more than 30,000 kilometers. Find the value of K such that the probability that the life time of a tire is less than K is 0.95. A sample of 80,000 was taken from these tires. Approximately how many have a life time greater than 38,000...
Consumer Reports indicated that the average life of a refridgerator before replacement is mean= 14 years...
Consumer Reports indicated that the average life of a refridgerator before replacement is mean= 14 years with a (95% of data) range from 9 to 19 years. Let x= age at which refrigerator is replaced. Assume that x has a distribution that is approximately normal. a) Find a good approximation for the standard deviation of x values. b) What is the probability that someone will keep a refrigerator fewer than 11 years before replacement? c) What is the probability that...
Assume the reaction time for participant taking a placebo follows a normal distribution with a mean...
Assume the reaction time for participant taking a placebo follows a normal distribution with a mean of 1.2 seconds and variance of 0.25 seconds. What is the probability that a randomly selected participant’s reaction time is longer than 2.2 second if he/she took the placebo? What is the probability that the same participant’s reaction time is between 0.8 seconds and 1.7 seconds? What is the probability of that same participant’s reaction time being exactly 1.2 second? What is the probability...
QUESTION 22 The results from a statistics class' first exam are as follows: The mean grade...
QUESTION 22 The results from a statistics class' first exam are as follows: The mean grade obtained by its 25 students is 83, with a standard deviation of 11. The distribution of grades was unimodal and symmetrical. What percentage of individuals have a z-score between -1 and 1.40 QUESTION 23 Suppose you have a tree farm and you have 1000 live oaks on this farm. You are wondering if this would be a profitable time to harvest the tallest ones...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT