Calculate the sample mean and standard deviation

Assignment Help Basic Statistics
Reference no: EM131015092

1. Calculate the sample mean and standard deviation for the time to reach -10°C for the Repair test panels discussed in Example 2.1.4 (p. 12).

2. Calcium levels were measured for three groups of test subjects after taking a vitamin (see Problem 2.1.11, p. 17). The data are recorded in vitamin .txt.

(a) Calculate the sample median and interquartile range for each set of test subjects.

(b) Make side-by-side box plots for the three sets of subjects.

(c) Summarize the differences in calcium levels (if any) between the three sets of subjects.

Reference no: EM131015092

Questions Cloud

Give the open interval where the function is decreasing : Give the open interval(s) where the function is decreasing. Give the open interval(s) where the function is concave down. Name the x-value where the absolute max occurs (if it exists).
Compare the effect of ph on the adhe­sive qualities : An experiment was performed to compare the effect  of  pH  on the  adhe­ sive qualities of a lens coating. The test procedure for measuring adhesion is "noisy", that is, there is a large amount of test error in the measurement. For that reason, 10..
Discussion of the two production lines : Calculate summary statistics and make side-by-side box plots for the two production lines. Two important issues in production are being on target and having minimal variation. Write a short discussion of the two production lines describing which..
Explain vibration measuring instruments : Explain vibration measuring instruments - vibration measuring instruments in physics.
Calculate the sample mean and standard deviation : 1. Calculate the sample mean and standard deviation for the time to reach -10°C for the Repair test panels discussed in Example 2.1.4 (p. 12).
At what values of theta do the two loops intersect : At what values of theta do the two loops intersect? All measurement are in inches, find the green area. Find the length of the border of the shape.
Define damped and undamped vibration : Define damped and undamped vibration - damped and undamped vibration of simple harmonic motion in physics.
Sample median and interquartile range and make a box plot : 1. For the data in webvisit .txt calculate the sample median and interquartile range and make a box plot. 2. For the data set odor .txt (see Problem 2.1.9, p. 16) do the following.
Results of a study on vitamins : The data set vitamin .txt contains the results of a study on vitamins. Three groups of test subjects each received a different treatment (three different vitamin formulations). Each subject's calcium levels before and after treat­ ment were record..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Develop the null and alternative hypotheses to determine

the boston public school district has had difficulty maintaining on-time bus service for its students a year later

  Probability students in sample exactly three are female

The student body of a large university consists of 70% female students. A random sample of 6 students is selected. What is the probability that among the students in the sample exactly three are female?

  Find the standard error of mean for selected taxpayers

A consumer watchdog agency selects a random sample of 40 taxpayers. What is the standard error of the mean? What is the likehood the sample mean is greater than 320 minutes?

  Choosing one of subjects-art-geology-psychology

A student must choose one of the subjects, art, geology, or psychology, as an elective. She is equally likely to choose art or psychology and twice as likely to choose geology.

  What proportion of students should score above 120

A psychologist has developed a test to measure self-control. The test is normed so that it has a mean of 100 and a standard deviation of 15... The scores are normally distributed in the population of college students used to develop the test.

  Find the probability that the claim will be rejected

a drug tester claims that a drug cures a rare skin disease 84 of the time. the claim is checked by testing the drug on

  Data analysis on creativitypre and creativitypost

Please construct an appropriate chart/graph that displays the relevant information for these two variables (comparative mean score of creative pre-post test).

  Let x1 x2 be a random sample of size 2 from a population x

let x1 x2 be a random sample of size 2 from a population x with exmu and vx 36. let t1 2x1 x23 and t2 3x1 - x23 be

  Determining the mean for list of numbers

Determine the mean for list of numbers. 6,  5,  9,  4,  14,  9 (Round to the nearest tenth)

  Estimated index of a person for an annual income

What is the estimated index of satisfaction for a person who first married at 18, has an annual income of $26,500, has three children living, has assets of $156,000, has an index of health status.

  In a recent survey of 800 quebec residents 28 thought that

in a recent survey of 800 quebec residents 28 thought that quebec should seperate from canada. in the same survey 82

  Test whether the average cycle of sleeping and waking

Test whether the average cycle of sleeping and waking differs significantly from 24 hours.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd