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There is a 0.9968 probability that a randomly selected 50-ye…

There is a 0.9968 probability that a randomly selected 50-year-old female lives through the year.  A Fidelity life insurance company charges $226 for insuring that the female will live through the year.  If she does not survive, the policy will pay out $50,000 as a death benefit.  If a 50-year-old female purchases the policy, what is the expected value?

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IQ scores are normally distributed with a mean of 100 and a…

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.  MENSA is an organization whose members have the top 2% of all IQ’s. Find the minimum IQ needed to qualify for the MENSA organization.

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Among companies doing highway or bridge construction, 80% te…

Among companies doing highway or bridge construction, 80% test employees for substance abuse. A study involves the random selection of 10 such companies.  Find the probability that exactly 5 of the 10 companies test for substance abuse.

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Suppose that pulse rates among healthy adults are normally d…

Suppose that pulse rates among healthy adults are normally distributed with a mean of 79 beats/second and a standard deviation of 10 beats/second. Draw the bell-shaped curve, label it, and shade the portion of the curve that corresponds to the probability in question. What percentage of healthy adults have pulse rates that are less than 65 beats/second? 

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IQ scores are normally distributed with a mean of 100 and a…

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.  MENSA is an organization whose members have the top 4% of all IQ’s. Find the minimum IQ needed to qualify for the MENSA organization.

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Read the following statement and decide if it is true or fal…

Read the following statement and decide if it is true or false. The three major stages or phases of wound healing include the: Inflammatory Phase, Proliferative Phase, Remodeling Phase.

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After their parents divorce,                percent of child…

After their parents divorce,                percent of children show emotional or psychological problems in adulthood.​

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GRAMMAR FOR SPEAKING: Present ContinuousComplete the convers…

GRAMMAR FOR SPEAKING: Present ContinuousComplete the conversation with the words in parentheses. Use the present continuous.Andy: Do you want to watch this video of me on vacation?Jake: Sure. Let’s see. Oh, wow! It’s so beautiful. Where is this?Andy: Rome, Italy. (29) ________________________ (I / stand) outside the Colosseum.Jake: Oh, yeah! (30) ________________________ (you / not / smile). Was something wrong?Andy: No, I was just really tired! We had a fantastic trip!Jake: And where are you here . . . Oh, I see—Venice, right? (31) ________________________ (you / get) into one of those special boats. What are they called . . .?Andy: Gondolas. (30) ________________________

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A group of similar cells that work together to perform a com…

A group of similar cells that work together to perform a common function is

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Andy granted an estate “to my daughter, Betty, for life.” Be…

Andy granted an estate “to my daughter, Betty, for life.” Betty later sold her interest to Cathy. Cathy’s estate:

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