If the sample size is 25, what is the value of the degree of freedom when using the z-test during a hypothesis test about the mean? 23 O24 O25 O No degree of freedom is needed

Q: Which table is used in hypothesis testing when sample size is 10 and sample standard deviation is…

A: Sample size(n)=10

Q: The health center head got the report that the median age of under-five children who visited the…

A: Given Information: The median age of under-five children who visited the under-five OPD is 34…

Q: Part 2 of 5 Find the critical value(s). Round the answer(s) to at least three decimal places. If…

A: Part 2 of 5; The degrees of freedom is, df=n-1=50-1=49 The degrees of freedom is 49. The level of…

Q: In a survey, 43% of the respondents stated that they talk to their pets on the telephone. A…

A: The question is about hypothesis testing.Given :Population proportion of respondents who talk to…

Q: Using a T – Test, what is the degrees of freedom of a one sample mean test having a sample size of…

A: Answer -  Using a  T – Test, what is the degrees of freedom of a one sample mean…

Q: The mean score on a widely freshman history examination is 75. A history teacher at a very large…

A: Given : population mean(μ)=75 Xi=test scores Dataset:

Q: A recent year was randomly picked from 1985 to the present. In that year, there were 2.051 Hispanic…

A:

Q: which is more appropriate if the sample size is more than 50? Kolmogorov test or Shapiro test?

A:

Q: You calculate that Ex = 110 and Ex2 = 1200. Perform the rest of the ANOVA calculations to determine…

A: It is given that Number of locations k = 3 Number of observations N = 11 Note : Since you have asked…

Q: Hypothesis testing is a systematic procedure for determining whether the results of an experiment…

A: Hypothesis testing is a systematic procedure for determining whether the results of an experiment…

Q: In a study of the accuracy of fast food dive-through orders, one restaurant had 38 orders that were…

A:

Q: Think of p as the proportion of all people whose names fall in the first half of the alphabet.…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: In order to make decision in hypothesis testing, p-value is frequently used when Select one: O a.…

A: In order to make decision in hypothesis testing, p-value is frequently used when Explanation: The P…

Q: What is the degree of freedom for one sample T test with n=15?

A:

Q: The p-value for a hypothesis test turns out to be 0.09064. At a 5% level of significance, what is…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: The school psychologist used a measure to classify children as showing some form of learning…

A: INTRODUCTION:  Chi-square test of independence of Attributes hypothesis: H0: Attributes A and B are…

Q: 85% of all restaurants fail after one year. Is that number different for Chinese restaurants? Out of…

A:

Q: A t-test is used to test hypotheses for the population mean . A random sample of 25 is selected for…

A: Given that a t-test is used to test hypotheses for the population mean .  Sample size, n = 25

Q: Assume that you plan to use a significance level of a=0.05 to test the claim that p1=p2.  Use the…

A: The null and alternative hypothesis is, The sample proportions are The pooled proportion or…

Q: When would you use a chi-square test?   In hypothesis testing, when would you use a one-sample…

A: A chi-square test for independence of attributes is used when the variables are qualitative in…

Q: A six-sided die is rolled 120 times. Fill in the expected frequency column. Then, conduct a…

A: When tossing a fair die, the probabilities for the face values are,…

Q: What are the degrees of freedom for this test? d.f.= What is the p-value for this sample?

A: Introduction: Denote p1, p2, p3, p4, and p5 as the respective true proportions for selecting…

Q: Give an example of a study for which the one sample z-test would the appropriate test statistic to…

A: The objective is to give an example of a study for which the one sample z-test would the appropriate…

Q: What is the relationship between the t-test and the sample size? (

A: Here identifying the relationship between t test and sample size

Q: In a survey, 33% of the respondents stated that they talk to their pets on the telephone. A…

A: The given data is as follows:Sample size (n) =210Number of owners who spoke to the pet on phone…

Q: auto racing a pit stop is where a racing vehicle stops for new tires, fuel, repairs and othe…

A:

Q: A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 6.6…

A: Solution.Use following Excel formulas

Q: University X installed a new water fountain in the gym. The machine is designed to dispense 250 ml…

A: The sample of 50 medium bottles; n=50 The average amount is 250; μ=250

Q: (b) Compute the value of the test statistic. Round the answer to at least three decimal places.

A: Given Information: Hypothesized value of population mean μ0=720 Sample size n=50 Sample mean x¯=765…

Q: answer the following:  **1.  Determine the test statistic.  x2 = ____ **2.  Determine the P-value of…

A: The test hypotheses are given below: H0​: White and minority candidates have the same chance of…

Q: A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper…

A:

Q: Kelly performs a hypothesis test and calculates a p-value of .489 for her sample data. Wha decision…

A: P-values are the probability of obtaining an effect at least as extreme as the one in your sample…