Based on the Nielsen ratings,the local CBS affiliate claims its 11 PM newcast reaches 41% of the viewing audience in the area. In a survey of 100 viewers,36% indicated that they watch the late evening news on this local CBS station. what is the z-statistic?

Q: The value of the test statistic is

A:

Q: The following are body mass index (BMI) scores measured in 9 patients who are free of diabetes and…

A: Mean of the data is defined as a measure of the central tendency.  Mean of the data values is…

Q: For the independent-measures t statistic, what is the effect of increasing the sample variances?

A: If there is more variance in the sample data , then the difference between the mean of data and data…

Q: What is the test statistic?

A: At Rachel's 11th birthday party, B-girls were timed to see how long ( in seconds ) they could hold…

Q: Q3: What type of test statistic is needed?

A: Here given , muzzle velocities of eight shells tested with new gunpowder . So here n = 8

Q: If a researcher reports a t-statistic with degree of freedom 19, how many individual subjects…

A: Given: Degree of freedom = 19

Q: An oil company conducts a geological study that indicates that an exploratory oil well should have a…

A: Given that  n=5 , p=20%=0.20 , q=1-p=1-0.20=0.80 X~Binomial(n=5,p=0.20) p=probability of chance of…

Q: What is the test statistic t ?

A: Here, the sample size n is 237.

Q: To see how much difference time of day made on the speed at which he could download files, a college…

A:

Q: Calculate the predicted self-control score for a person living in a good neighborhood who is 18…

A:

Q: A Bloomberg Businessweek North American subscriber study collected data from asample of 2861…

A:

Q: A software company is interested in improving customer satisfaction rate from the 80% currently…

A: The Null and Alternative Hypotheses is given by: H0: p0=0.80 H1: p0≠ 0.80 The sample proportion is…

Q: What is the value of the test statistic, F?

A:

Q: If a P-value is .043, what does that mean in terms of the value obtained for the test statistic?

A: p-value is the probability of obtaining more extreme results under  null hypothesis, by more extreme…

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: It is given that x=176, n=267 and P=0.61.

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A:

Q: A software company is interested in improving customer satisfaction rate from the 66% currently…

A: From the provided information, A software company is interested in improving customer satisfaction…

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: Given data A software company is interested in improving customer satisfaction rate from 61%…

Q: What is the third quartile of the number of accidents per month?

A: We have to find the third quartile for the given data.

Q: What is the test statistic? And what is the P value?

A: Introduction: Here μd is the true mean difference between the actress’s and actor’s ages. That is,…

Q: In examining the ability of users to complete a variety of information-seeking tasks on their mobile…

A:

Q: What is measured by the numerator of the z-score test statistic?

A: # What is measured by the numerator of the z-score test statistic?

Q: A software company is interested in improving customer satisfaction rate from the 80% ourrently…

A: Solution Given that , claim proportion of customer satisfaction p=80% That p=0.80 To test the…

Q: Calculate the test statistic,

A: Given that sample size is n = 76 And number of peoples who said they are confident of meeting their…

Q: A software company is interested in improving customer satisfaction rate from the 50% currently…

A: The null and alternative hypothesis is defined as:

Q: compared to the median, the mean number of hours that participants watch television is ___.  -lower…

A: The given Statistic is :

Q: In the case of research data analysis which one is the best? SD (standard deviation)  or ANOVA?

A: Statistical methods involve  planning, designing, collection of data, analyzing the data,…

Q: A software company is interested in improving customer satisfaction rate from the 62% currently…

A: Population proportion is 0.62 Sample proportion is 90/135 =0.6667

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 52% of the…

A: Givensample size(n)=100p^=0.47

Q: What is the significance of a z-score?

A: The value of z score tells that how many standard deviations the data is spread away from mean. The…

Q: Find the standardized test statistic .

A: p1 = 0.45p2 = 0.39 n1 = 1042n2 = 1061

Q: What is the / Find the 99th percentile of the t-distribution with 18 degrees of freedom.

A: Here Given df =18

Q: What is the 25th percentile of a χ2 distribution with 20 degrees of freedom? What symbol is used to…

A: It is an important part of statistics. It is widely used.

Q: Seventy-four percent of Americans favor spending government money to develop alternative sources of…

A: According to the provided information, Sample size (n) = 120 Probability (p) = 0.74

Q: Which of the following is the value of the appropriate test statistic?

A: We will use paired t test to test that whether the training was effective. Let d be the difference…

Q: ) what is the first quartile? B) % of the data between 30 and 36

A: See the handwritten solution

Q: What is the test statistic?   What is the p value?

A: We have given that  Population proportion, p = 0.785 Sample proportion, p^ = 0.36 Sample size = 853

Q: A software company is interested in improving customer satisfaction rate from the 55% currently…

A: The following information is provided: The sample size is N=247N = 247, the number of favorable…

Q: A recent study showed that the cost of buying a typical shopping basket of 40 food items for…

A: Given data is 8100,6600,6150,5100,4900Arrange the data in ascending…

Q: A software company is interested in improving customer satisfaction rate from the 75% currently…

A: From the given information, Consider, x be the random variable that shows the customer satisfaction…

Q: what is the test statistic

A:

Q: Which of the following is an accurate definition for the power of a statistic test?

A: Power of a statistical test is the chance of rejecting the null hypothesis when the null hypothesis…

Q: A software company is interested in improving customer satisfaction rate from the 54% currently…

A: Given, A software company is interested in improving customer satisfaction rate from the 54%…

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: Given,sample size(n)=107no.of customers were satisfied (X)=73population proportion(P)=0.61

Q: In almost all research studies, data are obtained from samples. A. True в. False

A: In almost all the research studies ,data are obtained from the samples  True  False

Q: A polling company reported that 59% of 1013 surveyed adults said that rising gas prices

A: (a). Find the expected value: The size of the sample taken from the population is n = 1013. It is…

Q: One standard for admission to Redfield College is that the student must rank in the upper quartile…

A: Given data: One standard for admission to Redfield College is that the student must rank in the…

Q: It is generally believed that nearsightedness affectsabout 12% of all children. A local elementary…

A: Therefore, the sampling distribution of the proportion of incoming kindergarteners is nearsighted…

Q: In a class of 31 students, how many would be above the third quartile?

A: From the above data  Sample size n=31 How  many would be above the third quartile?

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.