The annual earnings (in dollars) of 35 randomly selected microbiologists are shown in the data table. Use the data to (a) find the sample mean, (b) find the sample standard deviation,and (c) construct a 98% confidence interval for the population mean.100,561 81,263 78,163 67,426 51,544 67,439 93,740 65,54079,715 73,848 44,533 87,083 60,731 58,158 54,746 78,09247,917 98,541 80,447 92,56263,580 74,563 50,617 60,94591,477 84,646 80,292 64,250 74,224 57,091 47,258 89,86175,661 61,334 81,990(a) Find the sample mean.x=(Type an integer or decimal rounded to two decimal places as needed.)(b) Find the sample standard deviation.S= (Type an integer or decimal rounded to two decimal places as needed.)(c) Construct a 98% confidence interval for the population mean.

Here given data set with 35 data values . n = 35

Answered: (a) Find the sample mean. x= (Type an…

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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ANSWER IN T-DISTRIBUTION. A group of mathematics teachers wants to estimate the average computational skills of the students in senior high school. the standard deviation from the previous study is 5. how large must the sample be selected if they want to have 95% confidence of finding whether the true mean differs from the sample mean by 3.
Suppose the weight of dogs is normally distributed with a mean of 35 pounds and a standard deviation of 5 pounds. What is the z-score for a dog weighing 34 lbs? Group of answer choices -0.2 0.2 0.98 -0.98 None of the above
The number of ornaments placed on trees is recorded. The results are as follows: 26 26 22 29 24 30 26 34 21 24 20 31 20 35 32 33 26 26 29 29 Find the Mean, Median, Mode, Midrange, Variance and Standard Deviation of the data.Round to 2 decimal places if necessary. Mean: Median: Mode: Midrange: Variance: 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.
A random sample of 10,000 bottles of cola was taken to see whether the mean weight was 16 fluid ounces, as marked on the container. The null hypothesis is that the population mean is 16 ounces. Use the read-out below to test the hypothesis that the colas do not have a population mean of 16 fluid ounces. You do not have to do any calculations; just interpret the given data clearly and thoroughly in the context of the problem. | One-Sample T: ounces Test of u = 16 vs = 16 Variable Mean StDev SE Mean 95 CI T P ounces 10000 15.9988 0.0985 0.0010 (15.9969, 16.0007) -1.21 0.225
This list of test scores has a mean of 50. Estimate whether the standard deviation is closest to 0, 1, 2 or 10. (This problem requires NO arithmetic - instead, I'm looking at your intuition about standard deviation) 12, 25, 14, 17, 12, 13, 12 (a) 0 (b) 1 (c) 2 (d) 10
Suppose a set of data has a sample mean of 112 and a sample standard deviation of 8.3. What is the z-score for the value 127.8? Round the z-score to two decimal places. Your Answer:
A researcher collects data that represents the average number of hours of sleep in the last two nights by 8 depressed patients and 9 non-depressed patients. The researcher is interested in whether the two groups reliably differ in the amount of sleep they get. Use Jamovi to calculate t-obt and the p value.
Using the R studio dataset: tsa <- read.csv("https://remiller1450.github.io/data/tsa.csv") From this dataset, take a sample of n = 10 claims. Record the mean Close Amount of this sample. Repeat this 500 times using a for-loop. What is the mean and the standard deviation of these 500 sample means. Draw a histogram (use freq = FALSE option) of these 500 sample means.
Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 13 days. A baby is considered premature if the pregnancy length is at or below the third percentile (P3) of all pregnancy lengths. Find the length of pregnancy in days that separates the premature babies from those that are not considered premature. Round to the nearest integer.
The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population mean of 100 and a population standard deviation of 20. What is the probability we could select a sample of 20 adults and find the mean of this sample is less than 95? 0.1314 0.7372 0.3686 0.7098
EPA studies of fuel consumption indicate compact car mileage to be normally distributed with a mean of 25.7 and a standard deviation of 6 mpg. Identify the Excel statement that will find the percentage of compact cars that get between 23 and 38 mpg. Use the file, if needed, to work your problem solution. TestScratch xlsx O =[NORM DIST(-0.45)+NORM.DIST(2.05)]*100 O =[1-NORM DIST(-0.45)-NORM.DIST(2.05)]*100 O =NORM DIST(-0.45)-NORM DIST(2.05)]*100 O =[1-NORM DIST(23)-NORM DIST(38)]*100 O =NORM DIST(23)-NORM DIST(38)]*100

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