Students in a statistics class are conducting a survey to estimate the mean number of unitsstudents at their college are enrolled in. The students collect a random sample of 49 studentsThe mean of the sample is 13 units. The sample has a standard deviation of 1.9 units.F.Find the 99% confidence interval for the average number of units that students in their collegeare enrolled in? Assume that the distribution of individual student enrollment units at thiscollege is approximately normal.1. The t value is -2. The standard error has a value of -3. The margin of error has a value of -4. Find the 99% confidence interval for the average number of units that students in their college are enrolledin

Given that,According to bartleby we can strickly answer three (3) subparts.

Answered: Students in a statistics class are…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The scores on a test are normally distributed with a mean of 100 and a standard deviation of 20. What is the score that is 3 standard deviations above the mean? A score of___is 3 standard deviations above the mean.
00 HI T R of of It takes an average of 13.2 minutes for blood to begin clotting after an injury. An EMT wants to see if the average will change if the patient is immediately told the truth about the injury. The EMT randomly selected 70 injured patients to immediately tell the truth about the injury and noticed that they averaged 13.4 minutes for their blood to begin clotting after their injury. Their standard deviation was 3.52 minutes. What can be concluded at the the a = 0.10 level of significance? %3D a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Select an answer O Select an answer C. The test statistic ? 0 is 0.475. Enter it here (please show your answer to 3 decimal places.) d. The p-value is 0.6360211626. Enter it here (Please show your answer to 4 decimal places.) e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that O The data suggest the population mean…
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The weight of all cans of coffee has a standard deviation of 0.76 ounces. A sample of 48 cans of coffee is taken study. Which of the following best describes the distribution of x¯?A. The distribution of x¯ is normal becuase it is always normalB. The distribution of x¯ may not be approximately normal because n = 48C. The distribution of x¯ is approximately normal becuase n = 48D. The distribution of x¯ is not normal because the population is normalE. None of the above
Previous Question Researchers measured the data speeds for a particular smartphone carier at 50 airports. The highest speed measured was T76 Mbps. The complete list of 50 data speeds has a mean of x 17.47 Mbps and a standard deviation of s 32.99 Mbps. a. What is the dilference between camer's highest data speed and the mean of all 50 data speeds? b. How many standard deviations is that (the difference found in part (a)? c Convert the camer's highest data speed to az score. d. If we consider data speeds that convert to z scores between-2 and 2 to be neither significantly low nor significantly high, is the camier's highest data speed significant? a. The difference is Mbps (Type an integer or a decimal Do not round) b. The dilference is standard deviations (Round to two decimal places as needed.) c The z score is z (Round to two decimal places as needed.) d. The camer's highest data speed is
The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?
The police reported that the average driver exceeds the 50 miles per hour speed limit by more than 9 miles per hour on the busiest street in a small town. A sample of 63 randomly selected cars were clocked by airplane radar. The average speed was 57.5 miles per hour, and the standard deviation of the speeds was 4.17 miles per hour. Determine if the average speed is greater than what the police department reported. Which parameter(s) are you given? Mark all that apply. p μ σ none Which statistic(s) are you given? Mark all that apply. ¯x ˆp ˆq s x none What is the problem asking you to do? Estimate a parameter Test a given parameter
I'd like the first question answer, the one that fills in the boxes. I can do the rest
The distribution of heights in a population of women is approximately normal. Sixteen percent of the women have heights less than 62 inches. About 97.5% of the women have heights less than 71 inches. Use the empirical rule to estimate the mean and standard deviation of the heights in this population. Mean: K inches Standard Deviation: inches
i already have answer in question A-D. please help me to solve the rest. topic is unkown standard deviation
This assignment is worth 1 points. The extra point will be added to your overall course grade. For example: if you receive an 88% in the course you can receive up to 1 point giving you a new score of 89%. The following rubric will be used. 0.25 point for drawing the normal distribution curve with the mean value labeled on the curve and the appropriate area shaded. 0.25 point for determining the value of the standard deviation of the sample mean. 0.5 point for finding the correct probability. All work must be shown in order to receive any credit. Please upload your completed assignment here. The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. A sample size of n = 60 is drawn randomly from the population. Find the probability that the sample mean is between two hours and three hours.

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