Q. 7 For the distribution and observed values given below, use the chi-square goodness-of-fit test to decide at the specified significance level whether the distribution of the variable differs from the given distribution. Distribution: 0.2 0.4 0.3 0.1 Observed frequencies: 85 215 130 70 Significance level = 0.05 Table: obserred Freqi Expectad Free. Diff. (o-E) chinsa. O -E Distr. 2.25 225 (-2) (soo) - 13 85

Q. 7 For the distribution and observed values given below, use the chi-square goodness-of-fit test to decide at the specified significance level whether the distribution of the variable differs from the given distribution. Distribution: 0.2 0.4 0.3 0.1 Observed frequencies: 85 215 130 70 Significance level = 0.05 Table: obserred Freqi Expectad Free. Diff. (o-E) chinsa. O -E Distr. 2.25 225 (-2) (soo) - 13 85

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: A random sample of male college baseball players and a random sample of male college soccer players…

A: From the provided information, Sample size (n1) = 25 and n2 = 25 Level of significance (α) = 0.05

Q: Words were displayed on a computer screen with background colors of red and blue. Results from…

Q: - - The following data were obtained from an indepen- dent-measures research study comparing three…

A: a) The null and alternate hypothesis is H0 : μ1=μ2=μ3HA : Not all the population means are equal…

Q: In the population of drivers, the mean number of traffic violations in the last 10 years is 5.2. In…

A: It is given that Population mean = 5.2 Sample mean = 4.25

Q: A variable of a population has a mean of µ = 82 and a standard deviation of G = 18. a. Identify the…

Q: A variable (X) of a population has a mean of 35 and a standard deviation of 42. a. If the variable…

Q: Which of the following levels of variability (standard deviation or variance) would most likely…

A: The platykurtic curve has shorter peak and thinner tail compared to normal distribution. The excess…

Q: Given in the table are the BMI statistics for random samples of men and women. Assume that the two…

A: Given in the table are the BMI statistics for random samples of men and women. Assuming that the two…

Q: We have provided a distribution and the observed frequencies of the values of a variable from a…

A: The null and alternative hypotheses are stated below: H0: P1=0.2, P2= 0.1, P3= 0.1, P4= 0.3 and P5=…

Q: The wingspan of a rare butterfly is normally distributed with mean (u) 12.0 mm and standard…

Q: We would like to calculate a confidence interval for a population proportion based on a random…

A: Given information- Sample size, n = 50 Confidence level, c = 76% We have given a population…

Q: Test the claim that the mean of the first population is less than the mean of the second population.…

A: level of significance = sample 1:n1= 135sample 2:n2= 142

Q: A 0.01 significance level is used for a hypothesis test of the claim that when parents use a…

A: In test of hypotheses, Critical Values are the cut-off values that provide with the regions in which…

Q: A 0.05 significance level is used for a hypothesis test of the claim that when parents use a…

Q: To test Hg: = 60 versus H,: u<60, a random sample of size n= 25 is obtained from a population that…

A: H0 : μ =60 H1 : μ <60

Q: Q9. The diagram is the distribution of the Standard Normal variate, Z. wwww w 0.5 0.4 0.3 .025 .025…

A: We have given that. X~N( μ , ?^2 ) μ =0 , ? =1 Z-score =( x - μ )/?

Q: The Sun News wanted to investigate whether there exists a difference in the average distance in…

A: Given Data : For Sample 1 x̄1 = 797 s1 = √1600 = 40 n1 = 13 For Sample…

Q: Listed below are the amounts (dollars) it costs for marriage proposal packages at different baseball…

A: The question is about measures.Given :To find :1 ) Range2 ) Standard deviation and variance of the…

Q: of word recall are given below. Use a 0.05 significance level to test the claim that the samples are…

A: The following null and alternative hypotheses need to be tested: This corresponds to a two-tailed…

Q: Suppose x has a normal distribution with mean ? = 59 and standard deviation ? = 14. a.Describe the…

A: Based on the provided information, the following values are known.Population mean μ=59, Population…

Q: In a recent study, the distances of certain raptor nests to the nearest marshland were studied. The…

A: Let Y be the random variable representing the distances of certain raptor nests to the nearest…

Q: . Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below. A.…

A: Given that Sample size n =144 Favorable cases x =66 NOTE:- According to bartleby guidelines expert…

Q: comma to separate answers as needed.) Part 8

A: *Answer:

Q: When parking a car in a downtown parking lot, drivers pay according to the number of hours or…

Q: scores on a statistics final in a large c lass were normally distributed with a mean of 73 and a…

A: Let random variable X be scores on a statistics final in a large class.X has normal distribution…

Q: A 0.01 significance level is used for a hypothesis test of the claim that when parents use a…

Q: Before the furniture store began its ad campaign, it averaged 123 customers per day. The manager is…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: 15.5 11.5 11.5 19.5 6.5 14 6.5 22.5 20.5 5

A: Solution: Let X be the lead concentration. The given data is 15.5, 11.5, 11.5, 19.5, 6.5, 5, 14,…

Q: Below are the SPSS results of a related (dependent) samples t-test. Use the SPSS results to answer…

A: Let xi; (i=1,2,...,n)and yi; (i=1,2,...,n) are two samples of same sizes and these two samples are…

Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

Q. 7 For the distribution and observed values given below, use the chi-square goodness-of-fit
test to decide at the specified significance level whether the distribution of the variable differs
from the given distribution.
Distribution: 0.2 0.4 0.3 0.1
Observed frequencies: 85
215 130 70
Significance level = 0.05
Table:
obserred
Breqi
Ex pected
Free'
Diff. (0-E) chi-sa.
O -E
Distr.
2.25
(-2) (so0)
(• 4) (500)
- 15
225
85
215
130
70
Totah
df = 3
2.
Caitrcal Valne =
Compare
cv to X-
Do you rejeet the Nue a Do not seject ?
what doss this mean
Write here

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

let x be a ramdom variable with mean= 150 and standard deviation =4.2. Ramdom samples of fixed size n=30 are drawn from the distribution of x. determine the distribution, mean, and standard deviation of sample mean
use the t- distribution and the sample results to complete the test of the hypothesis. use a 5% significance level. Assume the results come from a random sample , and if the sample size is small, assume the underlying distribution is relatively normal . H0: miu=4 vs Ha: miu not equal to 4 using the sample results x bar =4.8 s= 2.3 with n=15. WHAT IS THE P-VALUE?
Plz help asap 41
What are the values for SS and variance for the following sample of n = 3 scores? Sample: 8, 5, 2
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 0.1 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is less than 0.5. Assume that sample data consists of 78 girls in 169 births, so the sample statistic of 613 results in a z score that is 1 standard deviation below 0. Complete parts (a) through (h) below.Click here to view page 1 of the Normal table. LOADING... Click here to view page 2 of the Normal table. LOADING...Question content area bottomPart 1a. Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below.A.H0: p≠0.5H1: p<0.5B.H0: p=0.5H1: p≠0.5C.H0: p=0.5H1: p<0.5D.H0: p=0.5H1: p>0.5Part 2b. What is the value of α?α=enter your response here (Type an integer or a decimal.)Part 3c. What is the sampling distribution of the sample statistic? Normal distribution Student (t) distribution χ2Part 4d. Is the test two-tailed, left-tailed, or right-tailed? Right-tailed…
A 0.01 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is different from 0.5. Assume that sample data consists of 55 girls in 100 births, so the sample statistic of 1120 results in a z score that is 1 standard deviation above 0. Complete parts (a) through (h) below.Click here to view page 1 of the Normal table. LOADING... Click here to view page 2 of the Normal table. LOADING...Question content area bottomPart 1a. Identify the null hypothesis and the alternative hypothesis. Choose the correct answer below.A.H0: p=0.5H1: p≠0.5B.H0: p=0.5H1: p>0.5C.H0: p=0.5H1: p<0.5D.H0: p≠0.5H1: p=0.5Part 2b. What is the value of α?α=enter your response here (Type an integer or a decimal.)Part 3c. What is the sampling distribution of the sample statistic? χ2 Normal distribution Student (t) distribution
The glucose readings are 95, 86, 84, 107, 101, 112,85,86. The sample mean is 94.8, it is a normal distribution wirh the standard devian is 12.5, and the mean glucose is 85. Do these data indicate that Ben has an overall average level higher than 85? Use a=0.05, what is the level of significance? Compute z value of the sample test statistic. Find p value
4. Sample Size. How does the sample size affect how close to normal a distribution of either sample means or sample pro- portions will be? What are the means and standard deviations of the distributions in each case? hp
Class 1 Final Sample Size: 30 Sample Variance: 80.55 Sample Mean: 44.2917 Class 2 Final Sample Size:30 Sample Variance: 55.29 Sample Mean: 36.4833 The assignment says to use the Z test for means and assume the hypothesized difference is 0. 1. Is there a significant difference in the means of the two finals at the .01 level of significance? 2. Why or why not?
Determine whether a normal sampling distribution can be used for the following sample statistics. If it can be used, test the claim about the difference between two population proportions p1 and p2at the level of significance α. Assume that the samples are random and independent. Claim: p1≠p2, α=0.01 Sample Statistics: x1=36, n1=75, x2=38, n2=65 Determine whether a normal sampling distribution can be used. The samples are random and independent. A normal sampling distribution cannot can be used because n1p=enter your response here, n1q=enter your response here, n2p=enter your response here, and n2q=enter your response here. (Round to two decimal places as needed.) State the null and alternative hypotheses, if applicable. A. H0: p1=p2 Ha: p1≠p2 B. H0: p1≤p2 Ha: p1>p2 C. H0: p1≥p2 Ha: p1<p2 D. The conditions to use a normal sampling distribution are not met. Calculate the standardized test statistic for…
Please help. Aslo, is the first part's answer d? Thanks so much