Americans spend over 30 billion dollars on a variety of, Ask an Expert

Statistics

Americans spend over $30 billion dollars on a variety of weight-loss products and services. In a study of retention rates of those using the Platinum Program at Jenny Craig from May 2001 to May 2002, it was found that about 25% of those who began the program dropped out in the first four weeks.7 Assume that we have a random sample of 300 people who are beginning the program.

(a) What is the mean number of people who will drop out of the Platinum Program in the first four weeks in a sample of this size? What is the standard deviation?

(b) What is the approximate probability that at least 210 people in the sample will still be in the Platinum Program after the first four weeks?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91012216

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Your company doesnt face any taxes and has 760 million in

Your company doesn't face any taxes and has $760 million in assets, currently financed entirely with equity. Equity is worth $51.00 per share, and book value of equity is equal to market value of equity. Also, let's assu ...

You apply both valuation criteria and financial strength

You apply both valuation criteria and financial strength criteria in choosing stocks. The probability that a randomly selected stock from your investment universe meets your valuation criteria is 0.25. Given that a stock ...

In 2015 caterpillar inc had about 653 million shares

In 2015, Caterpillar Inc. had about 653 million shares outstanding. Their book value was $32.3 per share, and the market price was $74.00 per share. The company's balance sheet shows that the company had $20.20 billion o ...

Williamnbspis interested in knowingnbspwhether or not

William is interested in knowing whether or not athletics from his team have lower satisfaction with their team on a survey than the known population average survey score of 19 and the known population survey standard ...

Jennifers broker has shown her two options in the

Jennifer's broker has shown her two options in the securities market for investment. Security one is a bond of par value of $1,000. The bond has a coupon interest rate of 11% paid annually maturing in seven years, with y ...

During the period from 2011 through 2015 the annual returns

During the period from 2011 through 2015 the annual returns on small U.S. stocks were -3.34 percent, 19.21 percent, 46.95 percent, 2.91 percent, and -4.10 percent, respectively. What would a $1 investment, made at the be ...

Past data from a specialized lung cancer clinic show that

Past data from a specialized lung cancer clinic show that 10% of patients entering the clinic have lung cancer. Data also shows 5% of the patients are smokers. Additionally, it is found that 7% of the patients are smoker ...

Now assume that i am talking about a normally distributed

Now assume that I am talking about a normally distributed set of data: An IQ test. This IQ test has a mean of 100 and a standard deviation of 15. Find the following probabilities What is the probability that someone scor ...

Tossing a fair coin three times whats the probability that

Tossing a fair coin three times, what's the probability that at least one head will occur?

You decide to research further this seemingly contradictory

You decide to research further this seemingly contradictory guidance, hypothesizing that the true population average core body temperature amidst higher ambient temperature and humidity levels while using an electric f ...

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