1 a survey was conducted to measure the height of ment in, Ask an Expert

Statistics

1. A survey was conducted to measure the height of ment. In the survey, respondents were grouped by age. In the 20-29 age group, the heights were normally distributed, with a mean of 68.7 inches and a standard deviation of 3.0 inches. A study participant is randomly selected.

a) Find the probability that his height is less than 68 inches.

b) Find the probability that his height is between 68 and 71 inches.

c) Find the probability that his height is more than 71 inches.

(Round to four decimal places.)

2. The life span of a battery is normally distributed, with a mean of 2300 hours and a standard deviation of 50 hours. What percent of batteries have a life span that is more than 2365 hours? Would it be unusual for a battery to have a lifespan that is more than 2365 hours?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91014847

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Suppose a life insurance company sells a 230000 one-year

Suppose a life insurance company sells a $230,000 ?one-year term life insurance policy to a 20?-year-old female for ?$330. The probability that the female survives the year is 0.999642. Compute and interpret the expected ...

Consider a machine with exponential reliability model

Consider a machine with exponential reliability model. Assume that the breakdown rate is 1 and the repair rate is 2. Calculate the probability that the machine is up for more than 10 units of time. Calculate the probabil ...

Explain how each of the following situations would affect

Explain how each of the following situations would affect interest rate and consequently, the equity market. a) Sudden increase of capital expenditure by the businesses b) Decrease of household savings in the market c) S ...

Lets see how much you have been paying attention for your

Let's see how much you have been paying attention. For your first Pause-Problem in this chapter, please tell me three things that differentiate parametric from non-parametric tests (Hint: There are actually four, so see ...

Show your work and solutionsnbspwhat is the npv of a

SHOW YOUR WORK AND SOLUTIONS What is the NPV of a project that costs $15,000 and returns $25,000 annually for three years if the opportunity cost of capital is 14%?

If all the data values in a population are converted to

If all the data values in a population are converted to? z-scores, the distribution of? z-scores will have what? mean? Choose the correct answer below. A. The mean of the? z-scores will be zero. B. The mean of the? z-sco ...

Cash flowsnbspnbspit is typical for jane to plan monitor

Cash flows It is typical for Jane to plan, monitor, and assess her financial position using cash flows over a given period, typically a month. Jane has a savings account, and her bank loans money at 6% per year while it ...

What is the minimum cash flow that could be received at the

What is the minimum cash flow that could be received at the end of year three to make the following project "acceptable?" Initial cost = $63,000; cash flows at end of years one and two = $35,000; opportunity cost of capi ...

Let x be a random variable with range rx -1 0 1 and let px

Let X be a random variable with range RX = {-1, 0, 1} and let P(X = 1) = P(X = -1) = p/2 for some p ∈ [0, 1]. a) Compute P(X = 0). b) Compute the expectation E[X] and variance Var(X) of X as a function of p, and determin ...

In random sampling why is cluster sampling an example of

In random sampling, why is cluster sampling an example of probability sampling?

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert