Based on the following two tables, what conclusions can you draw? Contrast between the expected values and the observed values.

Q: teacher wanted to determine whether there was a significant difference in the mean daily hours of…

A:

Q: A high school senior wonders if being blindfolded affects a person's typing accuracy. He randomly…

A: Ans: because the p-value is less than , there is evidence of a difference on average in typing…

Q: Consider the following competing hypotheses and accompanying sample data. (You may find it useful to…

A: Solution: Given information: n1= 22 Sample size of sample 1n2= 18 Sample size of sample 2x1= 57…

Q: A manufacturer wanted to know if more coupons would be redeemed if they were mailed to the female in…

A: Solution: Given information: n=50 Sample size  xd= 1.5   Difference of sample mean sd= 4.75…

Q: The college of business was interested in comparing the attendance for three different class times…

A: Given: Data on attendance for three different class times for a business statistics class. The…

Q: An occupational therapist (OT) is comparing two different treatments to see which is more effective…

A: we have two groups one consisting of participants A, B, C, D and the other treatment is on…

Q: b. Use a - .05 to test for a significant difference in perception among the three groups. Calculate…

A: From previous part we already know that : Means sqaure error = MSE = 0.5 n1  = n2 = n3 = 6 dferror =…

Q: Read the scenario and use your knowledge of descriptive statistics to answer the prompt. You are the…

A: The question is about probability Given : A bag of sample which contains No. of grape flavor candies…

Q: Is there a relationship between treatment and smoking cessation? A study randomly selects a group of…

A: The chi square is used to measure whether there is any relationship between the categorical…

Q: Looking at the mean score for the Goodyear Silents (6) and their opponents (3.54)   would you expect…

A: Given Information: Mean score of good year silents = 6 Mean score of their opponents = 3.54

Q: A researcher wants to know if brighter lights make factory workers more productive. Workers in a…

A: Independent Variable is the brightness of the lights. Dependent Variable is the productivity of the…

Q: The standard deviation for the sample of five perfumed hands was 12.052%. Conduct the 5 steps of…

A: Let  be the population mean.Given that,Population mean Sample size Sample mean Sample standard…

Q: data in the top row of the table shows the number of vacation days taken by the respondent in the…

A: Solution :   0-2 Vacation days  3+ vacation days  Row Total  Happy  84 ( 104)  221 (201)…

Q: The recidivism rate for convicted sex offenders is 16%. A warden suspects that this percent is…

A: Given : x = 72 n = 378 p^ = xn p^ = 72378 p^ = 0.191 α = 0.1 a) For this study, we should use…

Q: There are two Chevrolet dealers in Jamestown, New York. The mean monthly sales at Sharkey Chevy and…

A:

Q: Investigators noted that the Deviance divided by the d.f. was greater than two. This could be an…

A: a. There is more variability in the responses than one would expect with the Poisson distribution.…

Q: 3. In Biology 340, weights are assigned to required activities as follows. Activity Project Exam 1…

A: Comment: As per the our company guidelines we are supposed to answer only one question. Kindly…

Q: Does 10K running time decrease when the runner listens to music? Nine runners were timed as they ran…

A:

Q: Three students, Linda, Tuan, and Javier, are given five laboratory rats each for a nutritional…

A: Linda's ratsTuan's ratsJavier's rats44.848.953.040.542.342.842.640.239.547.747.746.839.546.050.1

Q: to know if any of the gifts were more or less popular or were they equal in preference.  The data…

A: If Chi square critical > chi square calculated then we fail to reject the null, there is not a…

Q: Lynn University wants to examine whether students display better academic performance in class…

A:

Q: Are very young infants more likely to imitate actions that are modeled by a person or simulated by…

A: State the hypotheses.

Q: Suppose you were to collect data for the following pair of variables, all elementary-school…

A: Introduction Scatterplot: A scatterplot is a graphical method to display the connection between two…

Q: An educational psychologist is comparing two instructional approaches. She teaches people using…

A: Solution: Given information: n= 16  Sample size xd= -1.0  Difference of sample mean sd= 14.0…

Q: Sam has conducted a survey to get more information about healthy diets. He hands his survey out to…

A: It is needed to find the type of bias.

Q: What is the type of test you will use? (z-test, single-sample t-test, paired-samples t-test, or…

A: Let μd be the mean difference in scores when teaching two approaches A and B. Claim: People learn…

Q: he relation of math ability to the belief that math ability was innate, the belief was considered…

A: First, we will find the mean and standard deviation fro group that believed that math is NOT…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.