Suppose 80 independent measurements are made for the speed of sound with an air temperature of 10Celsius. The mean of the samples was 338.5 meters per second and the standard deviation was 2.2. Whichof the statement below are True?a. Approximately 95% of the sample measurements need to be between 338.5 ± 1.96 * 2.2 for the meanof the sample to be normally distributed.b. Based on this sample, the 95% confidence interval for the true speed of sound at 10C is 338.5±1.96*2.2/√80c. The probability that the true speed of sound at 10C is between 338.5±1.96 * 2.2/√80 is 95%.d. The probability that the true speed of sound at 10C is between 338.5±1.65 * sqrt(2.2/80 is over 90%.e. Approximately 90% of the sample measurements were between 338.5±1.65 * 2.2/√80f. The sample size of 80 is too small to judge the accuracy of the measurements.

Given, Sample mean, x¯=338.5 Sample standard deviation, s=2.2 Sample size, n=80

Answered: Suppose 80 independent measurements are…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

A group of students takes the Kaplan course in hopes that it will improve their SAT scores on the math section above the national mean of 500. The population standard deviation of the SAT is known to be 100. The sample mean for the 215 students was 543.53. Calculate the observed z score for the sample.
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.5% of the thermometers are rejected because they have readings that are too high and another 2.5% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents the region in which thermometers are rejected? Choose the correct graph below. O A. O B. C. OD.
A California lake has been stocked with rainbow trout. These trout have an average length of 24 inches, with a standard deviation of 3 inches. Someone goes fishing and catches a trout that is 26.25 inches long. Express the length of this trout in standard units, relative to all the trout that were used to stock the lake. Choose the answer below that is closest.
For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to: А. 11 С. 12 В. 14 D. 13
Students at TAMUCT pay on average $5,200 per semester for tuition with a standar deviation of $120. In a group of 1,000 students, how many would we expect to pay more than $5,500 per semester?
can you answer c and also solve for the z value please
The lengths of 40 leaves of a plant are measured correct to the nearest millimeter. Less than Cumulative frequency of the data obtained is represented in the following table. Which central tendency will be most appropriate for the data set? Length (mm) Less than cum freq Less than 127 3 127-135 136-144 17 145-153 29 154-162 34 163-171 38 172-180 40 O a. mode O b. mean O. midrange O d. median
The average height of 1,000 children is 150cm with a standard deviation of 10cm. How many children stand between 155cm and 150cm ? A. Find the raw score for z= -1,-2,-3,+1,+2,+3 B. Sketch the graph C. What z score corresponds to 50? D. What z score corresponds to 60? E. Find the total area . F. Multiply the total area by 1000. G. Make a conclusion.
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. Assume 2.1% of the thermometers are rejected because they have readings that are too high and another 2.1% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others.

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS

Suppose 80 independent measurements are made for the speed of sound with an air temperature of 10 Celsius. The mean of the samples was 338.5 meters per second and the standard deviation was 2.2. Which of the statement below are True?