how i can solve this please Q2: Assuming the mean of the following frequency table of a sample is (14).Classmidpoint frequencyx+410X+43x+82x-4a) Find the value of xb) Compute the variancec) Obtain class boundariesd) Compute interquartile range (1QR)1520

Name: how i can solve this please Q2: Assuming the mean of the following fre
Uploaded: 2024-03-20T07:06:27.000Z
Channel: Bartleby
Description: how i can solve this please Q2: Assuming the mean of the following frequency table of a sample is (14).Classmidpoint frequencyx+410X+43x+82x-4a) Find the value of xb) Compute the variancec) Obtain class boundariesd) Compute interquartile range (1QR)1

“Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Answered: Q2: Assuming the mean of the fol Class…

Math

Statistics

Q2: Assuming the mean of the fol Class midpoint frequency x+4 10 x+4 15 3x+8 20 2x-4

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 14PPS

See similar textbooks

Similar questions

Recent surveys have shown a decline in the percentage of U.S. households withcable TV. In one city, a simple random sample of 468 households had 117households reporting they had cable TV, and 351 households reporting they didnot.(a) Show the “plug-in” box to represent our best guess for the relative frequency ofpeople with and without cable. (Let 1 correspond to with cable and 0 without).(b) The percentage of households in the city with cable TV is estimated to be___________%, and this estimate is likely to be off by about ___________% or so.(c) A 90%-confidence interval for the percentage of households in the city withcable TV goes from ___________% to ___________%.
Based on a Pitney Bowes survey, assume that 42% of consumers are comfortable having dronesdeliver their purchases. Five consumers are randomly selected from the population that wassurveyed. d) Use the range rule of thumb to determine if 4 of the 5 consumers being comfortable withdrone deliveries is significantly high.
The Weight and Blood Pressure of 26 Randomly Selected Male People in a Group ages 25 to 30 are shown in the following table. Suppose weight and blood pressure are normally and jointly distributed Y= 69.1044 + 0.4194x A)Test the hypothesis that rho = 0 and test the hypothesis that rho = 0.6
The table below summarizes data from a survey of a sample of women. Using a 0.01significance level, and assuming that the sample sizes of 800 men and 300 women are predetermined, test the claim that the proportions of agree/disagree responses are the same for subjects interviewed by men and the subjects interviewed by women. Does it appear that the gender of the interviewer affected the responses of women? Gender of Interviewer Man Woman Women who agree 498 247 Women who disagree 302 53 Compute the test statistic, rounding to three decimal places. Find the critical value(s). (Round to three decimal places) What is the conclusion based on the hypothesis test?
The assumption of homogeneity of variances was tested by Levene’s Test, F(2, 432) = .75, p = .48. Was the assumption met?
A sample of thirty people is obtained and each person taste three brands of instant coffee and identifies his or her preference. The resulting observed frequency data are as follows: Brand X Brand Y Brand Z 5 14 11 1 A researcher wants to use these data to test for preferences among the three brands. State the hypotheses and find the expected frequencies for the chi-square test if the researcher expects an equal proportion to fall within each group. 2 Consumer data show that ten years ago, “Brand X” was preferred by 20% of the population, “Brand Y” was preferred by 40% of the population, and “Brand Z” was preferred by 40% of the population. A researcher wants to use these data to test whether there has been a significant change in preferences during the past ten years. State the hypotheses and find the expected frequencies for this chi-square test. 3 Compute two goodness-of-fit hypothesis tests—first using the expected frequencies from part a, and then using the…
Suppose you randomly select a sample of 16 observations from a population with �=11 attached in ss below thanks for help agoajgr r
A two-factor, independent-samples design is evaluated using an analysis of variance. The F-ratio for factor A has df = (2, 99) and the F-ratio for factor B has df = (2, 99). Based on this information, the degrees of freedom for A x B interaction would be df = (censored, ____________). Fill in the blank for the second value.
The claim is that the proportion of accidental deaths of the elderly attribute to residential falls is more than 0.15, and the sample statistics include n=600 deaths of the elderly with 102 of them attributable to residential falls. Find z.
Suppose that a random sample of size 1 is to be taken from a finite population of size N. a. How many possible samples are there?b. Identify the relationship between the possible sample means and the possible observations of the variable under consideration.c. What is the difference between taking a random sample of size 1 from a population and selecting a member at random from the population?
Use the data in Ex 9.17, but pretend that the sample sizes were 50 and 50.Do the data provide significant evidence, at the 3% level, that the population mean recall for the video-only group is higher than the population mean recall for the A/V group?(zobs =0.973, z.03 =1.88 )