(Answered) Acording to the national center for health statistics 224

Statistics

According to the National Center for Health Statistics, 22.4 % of adults are smokers. A random sample of 300 adults is obtained.

A. Does this represent a normal distribution?

B. In a random sample of 300 adults, what's the probability that at least 50 are smokers?

C. Would it be unusual if a random sample of 300 adults results in 18% or less being smokers?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92780776
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

How would i calculate this to get the probability if a

How would I calculate this to get the probability. If a person bought 1 share of Google stock within the last year, what is the probability that the stock on that day closed at less than the mean for that year? Hint: You ...

Using excel a manufacturer of celsius thermometers claims

Using Excel, A manufacturer of Celsius thermometers claims the thermometers they produce have an average (mean) reading of 0 degrees Celsius and a standard deviation of 1 degree Celsius for freezing water . If one of the ...

A 10-year annuity-immediate pays 100 quarterly for the

A 10-year annuity-immediate pays 100 quarterly for the first five years. Starting year 6, the annuity immediate pays 300 quarterly for the remaining five years. There is a nominal annual interest of 8% convertible quarte ...

From a random sample of 41 teens it is found that on

From a random sample of 41 teens, it is found that on average they spend 31.8 hours each week online with a standard deviation of 3.65 hours. What is the 90% confidence interval for the amount of time they spend online e ...

What is correct alternative hypothesis for the claim that

What is correct alternative hypothesis for the claim that the average professional basketball player is at least 6' 9" tall. And Answer "True" if the statement is always true. If the statement is not always true, replace ...

What types processes or procedures support project

What types processes or procedures support project management, continuous improvement and innovative initiatives?

Let random variable x represent the number of heads when a

Let random variable x represent the number of heads when a fair coin is tossed two times. (a) Construct a table describing the probability distribution. x P(x) 0 1 2 (b) Determine the mean and standard deviation o ...

According to the polk company a survey of households using

According to the Polk Company, a survey of households using the Internet in buying or leasing cars reported that 81% were seeking information about prices. In addition, 44% were seeking information about products offered ...

A survey of a random sample of 1000 smartphone owners found

A survey of a random sample of 1000 smartphone owners found that the mean daily time spent communicating on a smartphone was 131.4 minutes. From previous studies, it is assumed that the population standard deviation is 2 ...

What are financial ratios commonly used in quantitative

What are financial ratios commonly used in quantitative models of debt ratings? List THREE financial ratios that represent three different factors and explain why these ratios can capture the company's ability to meet it ...

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