Tests the claim that pi # p2. Assume the samples are random and independent.T1 = 26 ; r2 = 11%3Dn1 = 58 ; n2 = 39a. Complete the table (use reduced fractions)P1P2PiThe Test Statistic(P1- P2) – (P1P2)I1 + 22Z =ni + n2b. Calculate the Z-test statistic using the standard error from part a. Z =(use 2 decimatplaces)C. At a 0.04, Use the distribution table to find the critical values for the rejection regionZ. =

Answered: Tests the claim that pi # p2. Assume…

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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A researcher wants to determine if the exam scores of the students are dependent on the length of time spent in studying the subject. Ten students in a certain class were taken and the results are shown in the table below where X is the time spent in studying the subject in hours and Y is the examination scores.If a test for the significance of r is conducted, using 5% level of significance ,what is the value of the t statistic?
A food company is planning to market a new kind of cereal; however before, they want to find the % of people who will like it. They select a random sample of 500 people and ask them to try the cereal. Of 500, 290 people say they like it. Compute the 95% cofidence interval for the % of the pop. that will like the cereal. Interept this cofidence interval.
The Rockwell hardness of a metal is determined by impressing a hardened point into the surface of the metal and then measuring the depth of penetration of the point. Suppose the Rockwell hardness of a particular alloy is normally distributed with mean 69 and standard deviation 3. In USE SALT (a) If a specimen is acceptable only if its hardness is between 64 and 73, what is the probability that a randomly chosen specimen has an acceptable hardness? (Round your answer to four decimal places.) (b) If the acceptable range of hardness is (69 - c, 69 + c), for what value of c would 95% of all specimens have acceptable hardness? (Round your answer to two decimal places.) (c) If the acceptable range is as in part (a) and the hardness of each of ten randomly selected specimens is independently determined, what is the expected number of acceptable specimens among the ten? (Round your answer to two decimal places.) specimens (d) What is the probability that at most eight of ten independently…
Employing the two-sample independent t test, with N1 = 11 and N2 = 11, find the degrees of freedom. Group of answer choices df = 20 df = 11 df = 19 df = 23 df = 21
Difference between two populations P1 and P2 can give results as? a P1+P2 b P1 > P2 c P1+2P2 d P1-2P2 what should be choose?
A researcher reports t(26) = 2.71 for a two independent samples t-test. How many participants were in the entire experiment? a. 28 b. 27 c. 30 d. cannot determine with the information provided
Carmen and Rosanna are two employees in an electronics store. The store manager has put an emphasis on increasing the number of applications for the store credit card. The manager randomly selected 24 weeks for each employee and recorded the number of completed applications for each week, which is provided in the samples below. Each employee completed 21 applications in one of the weeks selected. Use Excel to calculate each employee's z-score for completing 21 applications. Round your answers to two decimal places. Carmen Rosanna11 56 1115 613 185 1114 1416 521 208 1110 97 1416 1513 1310 619 2118 95 1817 310 126 1712 1214 419 1017 8
Which z-score has the higher frequency? (a) z = +1.0 or z = +2.3; (b) z = −2.8 or z = −1.7; (c) z = −.70 or z = −.20; (d) z = 0.0 or z = −2.0.
Help please 2
Determine the mean of the randon variable
Biologists studying horseshoe crabs want to estimate the percent of crabs in a certain area that are longer than 35 centimeters. The biologists will select a random sample of crabs to measure. Which of the following is the most appropriate method to use for such an estimate? A one-sample z-interval for a population proportion A A one-sample z-interval for a sample proportion B A two-sample z-interval for a population proportion C A two-sample z-interval for a difference between population proportions D A two-sample z-interval for a difference between sample proportions

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