Suppose a random sample of 6 rivers is selected and the, Ask an Expert

Statistics

Assume a river's alkalinity level is normally distributed with mean 50 milligrams per liter and standard deviation 3.2 milligrams per liter.

a) What is the probability that a river's alkalinity level is greater than 48.4 milligrams per liter?

b) Suppose a random sample of 6 rivers is selected and the alkalinity level of each is measured. What is the probability that the random sample mean will be greater than 48.4 milligrams per liter?

c) Suppose a random sample of 6 rivers is selected and the alkalinity level of each is measured. What is the probability that the random sample mean will equal 48.4 milligrams per liter?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9102290

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

1 if there are 150 values in a data set how many classes

1) If there are 150 values in a data set, how many classes should be created for a frequency histogram? A. 5 B. 6 C. 7 D. 8 E. 9 2) . If x is a binomial random variable where n = 100 and p = 0.2, find the probability th ...

An investor considers investing 10000 in the stock market

An investor considers investing $10,000 in the stock market. He believes that the probability is 0.30 that the economy will improve, 0.40 that it will stay the same, and 0.30 that it will deteriorate. Further, if the eco ...

Suppose it is known that the response time of healthy

Suppose it is known that the response time of healthy subjects to a particular stimulus is a normally distributed random variable with a mean of 15 seconds and a variance of 16. What is the probability that a random samp ...

A company recently had 26 million shares outstanding

A company recently had 26 million shares outstanding trading at $45/share. The company announces its intention to raise $290M by selling new shares. What percentage of the value of the company's existing equity prior to ...

If the return on stock a in year 1 was 11 in year 2 was

If the return on stock A in year 1 was 11 %, in year 2 was -10 %, in year 3 was -4 % and in year 4 was 2 %, what was the standard deviation of returns for stock A over this four year period? (Round your answer to 1 decim ...

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 ...

Out ofnbsp350nbspapplicants for a jobnbsp158nbspare female

Out of 350 applicants for a job, 158 are female and 66 are female and have a graduate degree. Step 1 of 2: What is the probability that a randomly chosen applicant has a graduate degree, given that they are female? Expr ...

Consider the distribution of 17 numbers Consider the distribution of 17 numbers:

Consider the distribution of 17 numbers: 6,9,11,19,23,27,29,36,41,43,47,50,51,55,58,63,67 A distribution of medical data is Normal with Mean of 40 and Standard Deviation of 10; that is N(40,10) a. Betty's score is 5.17. ...

A student is gathering data on the driving experiences of

A student is gathering data on the driving experiences of other college students. One of the variables measured is the type of car the student drives. These data are coded using the following method: 1 = subcompact, 2 = ...

Analysis of variance anovaan investigator compares the

Analysis of variance (ANOVA) An investigator compares the difference in the amount of 20% sucrose solution removed by pollinators between unadulterated solution and solutions with 50, 100, 150, and 200 parts per million ...

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