1. It is thought that 12% of all students taking a particular course received a grade of A. In a sample of 155 students, it is found that 21 made an A. What is the test statistic for testing the true proportion is 12%? a. 0.53 b. 0.01 c. 0.57 O d.5.7 Clear selection

1. It is thought that 12% of all students taking a particular course received a grade of A. In a sample of 155 students, it is found that 21 made an A. What is the test statistic for testing the true proportion is 12%? a. 0.53 b. 0.01 c. 0.57 O d.5.7 Clear selection

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: Only 18% of registered voters voted in the last election. Will voter participation decline for the…

A: a. we should use z test for one sample proportion.

Q: The correct test to use when the grouping variable has at least three groups, the measurement scale…

A: It is asked to choose the correct option for the measurement scale of the variable is at least…

Q: Determine the P-value for a two-sided test with t = 2.85 and n=9 Oa. 0.035 O b. 0.01 OC. 0.015 O d.…

A: Given information- We have given the two-sided t-test. The value of the t-test is, t = 2.85 Sample…

Q: Two sections of statistics are offered, the first at 8 a.m. and the second at 10 a.m. The 8 a.m.…

A: given , Two sections of statistics are offered, the first at 8 a.m. and the second at 10 a. m The 8…

Q: Clinical trials involved treating flu symptons with a new medicine. Among 1123 patients treated…

A: From the provided information, Sample size (n) = 1123 90 experienced a side effect of dizziness that…

Q: What is the mode for the following sample of n = 11 scores? Scores: 1, 2, 2, 2, 3, 3, 4, 5, 6, 6, 7…

Q: What is the p-value of a one-sided greater than One-Sample Z-Test for Mean where the z-statistic…

A: Denote p as the true population proportion.

Q: The 3rd quartile of the ages of 300 students of Math class is 22 years. Which of the following…

Q: The mean number of eggs per person eaten in the United States is 272. Do college students eat more…

A: In order to determine whether the average number of eggs eaten by college students per person is…

Q: Professor X had the 22 students in his 10 A.M. Introduction to Marketing rate his performance as…

A: Given: The data given is shown below Excellent Good Fair Poor 94 75 70 68 90 68 73 70 85…

Q: In tests about a population proportion, p0 represents the a. hypothesized population…

A: The test statistic for population proportion, z=p^-p0p01-p0n

Q: What is the most important thing to remember when choosing a sample? a. Samples should be chosen at…

A: We have given that the statement about to the sample. It is a part of population.

Q: A national health survey weighed a sample of 260 boys aged 6-11 and found that 45 of them were…

A: Hypothesis Testing

Q: C. Find the sample size from each of the given data. 7.95% level of confidence, E = 10, o = 24 8.…

A: C. 7. Here it is given that 95% confidence , margin of error E=10 and standard deviation σ=24…

Q: Consider a sample with dala values of 13. 15. 16, 20, 23. Compute the mean. Select one: Oa. 17.6 Ob.…

Q: A national survey of 1000 adult citizens of a nation found that 19% dreaded Valentine's Day. The…

Q: 2. 10% of all college students volunteer their time. Is the percentage of college students who are…

A: As per our guidelines, we can solve only the first three subparts, Kindly repost the others for…

Q: n a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Formula : x¯ =x¯1 n1+x¯2 n2 + x¯3 n3n1+n2+n3

Q: The 2004 General Social Survey asked a random sample of 977 adult Americans how often they feel…

A: Given: The value of n is 977. The value of x is 304. The value of p^ is estimated as, p^=xn The test…

Q: A class is made out of 22 students, The sample mean is 26.91, and the sample st. dev is 10.46. ? a=…

A: From the provided information, Sample size (n) = 22 Sample mean (x̄) = 26.91 Sample standard…

Q: The measure of central tendency which is used for categorical data is Select one: O a. mean O b.…

Q: It is thought that 12% of all students taking a particular course received a grade of A. In a sample…

Q: A fitness trainer is interested in investigating whether ethnicity and the first exercise activity…

Q: What is the computed value of the test statistic? A. 4.381 B. -4.381 C. -4.898 D. 4.898

Q: Dr. Garcia is curious about her teaching skills. To investigate, her class takes an anatomy quiz.…

A: Given Information: Population mean μ=15 Significance level α=0.10 Data: 16, 17, 18, 16, 19, 15, 18…

Q: D. What can you conclude about whether there was a significant difference between the scores of the…

A: Given:

Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.4. What is the p-value…

A: Solution

Q: in a survey conducted by a reputable marketing agency, 277 of 1000 adults 19 years of age or older…

A: To ensure that the results of the study are representative of all adults 19 years of age or older,…

Q: Suppose 65% of all college students find watching TV a waste of time. The population proportion is…

A: Consider that p is proportion of all college students find watching TV a waste of time.

Q: . What statistical test should he use to analyze the data?

Q: 4- A florist is interested in the proportion of her clients that prefer roses in their flower…

A: Disclaimer: Since you have posted a question with multiple sub-parts, we will solve first three sub…

Q: Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna). (Reference: Hummingbirds,…

A: The sample test statistic is, z=x¯-μσn=3.75-4.300.646=-0.550.2612789=-2.1050≈-2.11 Thus, the sample…

Q: Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna). (Reference: Hummingbirds,…

Q: The goals scored per game by a soccer team represent the first quartile for all teams in a league.…

A: The goals per game by a soccer team represents the first quartile for all teams in a league.

Q: State whether each situation has independent or paired (dependent) samples. a A researcher wants to…

A: Solution: (a):Independent samples (b):Independent samples Explanation: There are two different…

Q: ven the random sample results below showing the percentages of people who support the death penalty,…

A: According to the scenario, the random samples of males and females are given. The samples are of…

Q: reviewer checks to see if a bag of candy weighs less than advertised (e.g., 100 grams). What is the…

A: We have to determine which test statistic is appropriate for this situation.

Q: a. The standard deviation of 25 scores is 10, the mean is 29, the median is 24 and the mode is 23.…

A: Our aim is to find the coefficient of skewness. The formula for Coefficient of skewness is ,…

Q: Difference tests are conducted to determine: A. the representative value in a given set of scores.…

A: "Difference tests are conducted to determine" We have to identify the correct option

Q: A statistics student claims that fewer than 10% of all females at CUNE have ever ridden a…

A: It is given, n=15 p=0.10

Q: What proportion of people scored worse than 14 better than 22, based on the following sample:

A: Given sample values,201116261328151821141217

Q: if the 90% Ci for the population mean is ( -2.58, 7.54) what is the sample mean

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

100%

1. It is thought that 12% of all students taking a particular course received a grade
of A. In a sample of 155 students, it is found that 21 made an A. What is the test
statistic for testing the true proportion is 12%?
a. 0.53
b. 0.01
c. 0.57
O d.5.7
Clear selection

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, probability and related others by exploring similar questions and additional content below.

Similar questions

6. A sample of 100 adult women was taken, and each was asked how many children she had. The results were as follows: Children 0 Number of 24 Women 1 20 2 35 3 13 4 7 5 1 a. Find the sample mean number of children. b. Find the sample standard deviation of the number of children. c. Find the sample median of the number of children. d. What is the first quartile of the number of children? e. What proportion of the women had more than the mean number of children? f. For what proportion of the women was the number of children more than one standard deviation greater than the mean? g. For what proportion of the women was the number of children within one standard deviation of the mean?
d
..
Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna). (Reference: Hummingbirds, K. Long, W. Alther.) Suppose that in a remote part of the Grand Canyon, a random sample of six of these birds was caught, weighed, and released. The weights (in grams) were as follows. 3.7 2.9 3.8 4.2 4.8 3.1 The sample mean is = 3.75 grams. Let x be a random variable representing weights of hummingbirds in this part of the Grand Canyon. We assume that x has a normal distribution and ? = 0.64 gram. Suppose it is known that for the population of all Anna's hummingbirds, the mean weight is ? = 4.30 grams. Do the data indicate that the mean weight of these birds in this part of the Grand Canyon is less than 4.30 grams? Use ? = 0.10. Level of significance = .10 Null and alternate hypotheses. - H0: ? = 4.3 g; H1: ? < 4.3 g; left-tailed Sampling Distribution - The standard normal, since we assume that x has a normal distribution with known ? Compute the z value of the sample test…
It is thought that 12% of all students taking a particular course received a grade of A. In a sample of 155 students, it is found that 21 made an A. What is the test statistic for testing the true proportion is 12%?
Use the results from a survey of a simple random sample of 1108 adults. Among the 1108 respondents, 84% rated themselves as above average drivers. We want to test the claim that 3/4 of adults rate themselves as above average drivers. a. Identify the actual number of respondents who rated themselves as above average drivers.
Which of the ff. statements are true I. A small t-score value indicates that the groups are similar. II. If tcalc is greater than tab , then the difference is significant. III. A p-value of 0.05 means there is 95% probability that the results happened by chance. IV. Independent sample t-test is used to compared means of two groups. O l and IV O I and III Il and IV O Il and III
PrActicE the legalization of marijuana. Among the Democratic voters surveyed, 158 of the 200 people aged 18-29 and 210 of the 300 people aged 50-64 supported legalizing marijuana. Is this difference significant at a = .05? A random sample of individuals in one town was surveyed about their position on
15. Which of the following is NOT a condition for inference when applying a 1-proportion z-test? a. np 25 b.ng 25 c. pq 25 d. data is obtained from a random sample
3. Health officials from DOH who have studied a particular virus say that 50% of all the Filipino people have had the virus. If a random sample of 144 people is taken, what is the mean value? a. 43 b. 57 c. 72 d. 84
b. What is the median giraffe height? ft. c. What is the Z-score for a giraffe that is 19 foot talL? d. What is the probability that a randomly selected giraffe will be shorter than 18.7 feet tall? e. What is the probability that a randomly selected giraffe will be between 19 and 19.8 feet tall? f. The 85th percentile for the height of giraffes is ft.