A researcher wants to asses the self-discipline levels among undergraduate and graduate students. A random sample of 300 undergraduate students was selected with average score of 184 and standard deviation of 16 ( group 1). Also , a random sample of 350 graduate students was selected with average score of 153 and standard deviation of 21 (group 2). Is this enough evidence to conclude that undergraduate students score less, on average than thhe graduate students. [ assume that the population variances are equals] ?1. What is the value of the pooled samplevarlance for the difference between the sample means None of theseO 355.640 18.860 1.480 16.150 IHip,-p,<0 i. What is the value of the test statistic for testing the hypothesis IHat,-H,-0 against 0.270 None of these 3376 337- 3.44

A researcher wants to asses the self-discipline levels among undergraduate and graduate students. A random sample of 300 undergraduate students was selected with average score of 184 and standard deviation of 16 ( group 1). Also , a random sample of 350 graduate students was selected with average score of 153 and standard deviation of 21 (group 2). Is this enough evidence to conclude that undergraduate students score less, on average than thhe graduate students. [ assume that the population variances are equals] ?1. What is the value of the pooled samplevarlance for the difference between the sample means None of theseO 355.640 18.860 1.480 16.150 IHip,-p,<0 i. What is the value of the test statistic for testing the hypothesis IHat,-H,-0 against 0.270 None of these 3376 337- 3.44

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Description: A researcher wants to asses the self-discipline levels among undergraduate and graduate students. Arandom sample of 300 undergraduate students was selected with average score of 184 and standarddeviation of 16 ( group 1). Also , a random sample of 3

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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An agricultural company is trying to decide which type of fertilizer to use on its crops. The company concerned with the average yield on its crops as well as the variance of their yields. In a sample of 41 different fields with using fertilizer A, the average crop yield per acre is 185 tons with a standard deviation of 35 tons. In a separate sample of 61 different fields using fertilizer B, the average crop yield is 175 tons with a standard deviation of 28 tons. When testing the hypothesis (at the 5% level of significance) that the variance of one of these yields is significantly larger than the other, what is the null and alternative hypotheses?
A researcher wants to asses the self-discipline levels among undergraduate and graduate students. A random sample of 300 undergraduate students was selected with average score of 184 and standard deviation of 16 ( group 1). Also , a random sample of 350 graduate students was selected with average score of 153 and standard deviation of 21 ( group 2). Is this enough evidence to conclude that undergraduate students score less, on average than the graduate students. [ assume that the population variances are equals]. i. What is the value of the pooled sample variance for the difference between the sample means? ONone of these O1.48 O16.15 O355.64 O18.86 ii. What is the value of the test statistic for testing the hypothesis Hou,-H2=0 against 0>°r1 – Trt:1 H ONone of these 03.37 )-3.37 O-3.44 O0 27
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