Researchers wanted to test the happiness score across 3 time-points. What is SSError (i.e.., SSwithin) = ?

Q: A DNP student wants to evaluate the change in knowledge scores of a group of cardiac patients after…

A: In given problem, a DNP student obtains a pretest at the beginning of class and immediately after…

Q: The lengths of a professor's classes has a continuous uniform distribution between 49.29 min and…

A: Solution:  Let X be the length of professor's classes has a continuous uniform distribution between…

Q: How to calculate the "P-value"  by hand?

A: To calculate the p-value, we first need to perform a linear regression analysis on the given data,…

Q: A survey item administered at the end of a training program asked participants their opinion about…

A: The observed value (Oi) is:   Too much Too little Just Right Total Men 25 19 6…

Q: A random sample of size n = 13 obtained from a population that is normally distributed results in a…

A:

Q: What is the p-value only?

A: It is given that  In the original solution  The value of the test statistic is z = 3.92. The given…

Q: A researcher finds that participants exposed to high, medium, or low levels of stress (as…

A: Given: The difference in the ratings of personal anxiety of participants is found by the researcher.…

Q: Would this be a t-test because the sample is less than 30?

A: From the given information, the population standard deviation is 2.

Q: Researchers were interested in assessing whether stress levels are different at the beginning of the…

A: The t test are used to compare the mean significance between the sample and population. It can…

Q: that the mean score of these 53 students is 147.9. Is this significantly different from the national…

A: Given: Sample size, n = 53 Mean,  Population mean,  standard deviation,

Q: Twenty years ago, 55% of parents of children in high school felt it was a serious problem that high…

A: Given n=700 P0=0.55

Q: How did you get the p-value?

A:

Q: What is p value ?

A: The​ P-value is the probability of observing difference in the sample statistic this high or higher…

Q: Researchers wanted to test the happiness score across 3 time-points   Happiness 1 Happiness 2…

A: The data shows the happiness score across 3 time-points.

Q: An article reports that in a sample of 124 nurses, 51 said that a busy workload had a positive…

A:

Q: A very wise teacher measured brain activity in all 20 seniors in his Statistics class in the first…

A: We have to find p value for given testing.

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A: From the provided information, Sample size (n) =750 and p0 = 0.54

Q: Whats the formula for converting a z score to t score?

A: What is the formula for converting a z score to t score?

Q: What does the P-value represent

A: The P-value is the probability of getting test results as extreme as possible as observed results,…

Q: Which is the best estimate for the number who bought fewer than 20 items during their trip? Rel f…

A: The histogram shows the number of items that customers bought during a trip to the grocery store one…

Q: Use the p-value to draw and explain your conclusion of the test

A: Solution: Given information:  The value of the test statistic is  t= 1.9781  Degree of freedom = df…

Q: Explain about two-tailed p-values.

A: Two tailed test: In two tailed test, the rejection lies in both sides. That is less than or greater…

Q: What’s the formula to turn a Z score to a T score?

A: The  score is the standardized score obtained by using population data or large samples .The  score…

Q: What is Ha? (H0 is the mean VIQ scores for the younger, middle-aged, and older subjects are all not…

A: Given the Null Hypothesis : H0 : is the mean VIQ scores for the younger, middle-aged, and older…

Q: what does it mean to have a z-score between -1 and 1? Does that include decimals like 0.341 and…

A: A standard Z-score describes the number of standard deviations above or below the mean.

Q: FICO scores range in value from 300 to 850, with a higher score indicating a more creditworthy…

A: Left skewed distribution, mean is to the left of median i.e. Mean is less than Median. For a skewed…

Q: Twenty years ago, 47% of parents of children in high school felt it was a serious problem that high…

A: Given that  Sample size n =900 Population proportion p=47%=0.47

Q: If a t-test dependent samples produced t(18) - 3.32, p < .01, 2-tails test, how many participants…

A: The type of test is two tailed test The value of t-test statistic for depend samples is, t = 3.32…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The hypothesis tests, contain two hypothesis: null hypothesis and alternate hypothesis. The…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A:

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2

Q: in a nation would skip an ortant event such rthday party ersary dinner to watc e pr Assume the…

A: given data, n=629x=433p^=xn=433629=0.6884α=0.10claim:p&gt;0.66

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: From the provided information, Population proportion (p0) = 0.57 Sample size (n) = 700 and x = 244

Q: GSS 2018 respondents were asked to rate their level of agreement to the statement, “Differences in…

A:

Q: In Las Vegas $1 slot machines average a 95% payout;in other words, the expected value of a $1 bet is…

A: The interpretation of probability has 2 meanings in statistics. The first arises from the frequency…