The weights of newborns are normally distributed with u = 7.3 lbs and o = 0.3 lbs. Use the appropriate z-score tablewhen necessary. Suppose 8 newborns are randomly selected.a.) Wample meO 1.89c.) Determine the probability that their mean weight is greater than 7.5 lbs.O 0.0294O 0.2514O 0.9706O 0.7486

The random variable X follows normal distribution. We have to find the probability that their mean…

Answered: The weights of newborns are normally…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Find the standardized test statistic, t, to test the claim that p, . Two samples are randomly selected and come from populations that are normal. The sample statistics are given 2 below. Assume that o, to,. n = 11, n2 = 18, x,=5.4, x2 = 5.8, s, = 0.76, s, = 0.51 O A. -1.326 O B. - 2.123 OC. -1.546 O D. -1.821 Next S:47 PM 59 F Clear AE 11/23/2021 P Type here to search PrtSc Insert Delo F7 F8 F9 F10 F11 F12 F3 F4 F5 F6 F1 F2 @ %23 $4 & Bac 1 2 4 6. 8. Q Y + I/ 因 T %#3
The amount of calories consumed by customers at Little Buffalos buffet is normally distributed with a mean of 2885 and a standard deviation 615. Fifty-seven randomly selected customers are observed to see how many calories they would consume. What is the probability that the selected customers consume an average of not more than 3000 calories? Notes: 1. Round off your z-score to two decimal places. 2. Write your answer using four decimal places. (i.e. 0.2612). If Canvas omits the last digit of 0, let it be. 3. Do not express your answer as percentage.
Given that z is a standard normal random variable, find z for each situation (to 2 decimals). The area to the left of z is 0.6591. The area to the right of z is 0.3409.
4.Read and answer please this is a review question
According to Reader's Digest, 38% of primary care doctors think their patients receive unnecessary medical care. Use the z-table. a. Suppose a sample of 310 primary care doctors was taken. Show the sampling distribution of the proportion of the doctors who think their patients receive unnecessary medical care. E(p bar)=(to 2decimals) Sigma subscript p bar= (to decimals) b. What is the probability that the sample proportion will be within +-0.03 of the population proportion? Round your answer to four decimals. c. What is the probability that the sample proportion will be within +-0.05 of the population proportion? Round your answer to four decimals. d. What would be the effect of taking a larger sample on the probabilities in parts (b) and (c)? Why? The probabilities would - Select your answer -(increase/decrease) . This is because the increase in the sample size makes the standard error, , - Select your answer -(larger/smaller) .
MN.27.
Given that Z is a standard normal random variable, what is the value of Z if the area to the right of Z is 0.7054? A.-0.54 B.1.54 C.0.54 D.-1.54
Given that z is a standard normal random variable, find z for each situation (to 2 decimals). Use Table 1 in Appendix B. a. The area to the left of z is 0.2119. -.8 b. The area between -z and z is 0.903. 1.3 c. The area between -z and z is 0.2206. .28 d. The area to the left of z is 0.9948. 2.59 e. The area to the right of z is 0.6915. -.5
Indrilling a vertical wellbore, the spacing between major fractures are recorded. It has been found that this spacing is having a mean of 180o ft and a variance of 3,240,000 ft In the first 2000 ft drilling, there was no present of major fracture in the well. Determine the probability that there is a major fracture at the depth of 2000-3500 ft. Select one: a.0.57 b.o.43 C. O.19 do 82
What is the probability of randomly selecting a z-score less than z = –1.25 from a normal distribution? Question options: a. 0.2112 b. 0.1056 c. 0.8944 d. 0.3944
Given the 4 categories and distribution, apply the Goodness-of-fit test for the claim that the 4 categories occur with the following distribution: Но : РА — 0.1;B рв 3 0.25;B рс — 0.4;B pp — 0.25 Observed Expected Category Frequency Frequency A 33 B 18 C 45 D 25 a. Complete the table for the expected frequencies. b. What is the chi-square test statistic for this data? Round to three decimal places. x? = c. What is the p-value? Round to four decimal places. p-value =

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS