The summary statistics for a certain set of points are:n= 25, s, = 2.50, E (x-x)¯= 250.12, and b, = 2.15.Assume the conditions of the linear model hold. A 98% confidence interval for B, will be constructed.Part 1 of 4How many degrees of freedom are there for the critical value?The degrees of freedom for the critical value are 23Part 2 of 4What is the critical value? Round the answer to three decimal places.The critical value is 2.500Part: 2 / 4Part 3 of 4What is the margin of error? Round the answer to three decimal places.Margin of error =

The summary of statistics is, The degree of freedom is, df=n-2 =25-2 =23 Critical value:…

Answered: The summary statistics for a certain…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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1. (Sec. 7.1) Given below are two confidence intervals for u = the true average alcohol content in a bottle of a particular brand of cough syrup. (7.9, 9.5) (8.0, 9.4) (a) What is the value of the sample mean alcohol content? (b) Suppose both intervals were calculated from the same set of sample data. The confidence level for one interval is 90%, and the confidence level for the other is 95%. Which interval has the 95% confidence level? How do you know? (c) Using your answer to part (b), consider the following statement: there is a 95% probability that the true (unknown) mean alcohol content µ lies in this interval. Is this statement true or false? Why?
Read through this scenario and look at the data that was collected. State the null and all possible research hypotheses. Review the results below (I used SPSS) and answer the questions that follow. Scenario: A researcher wants to see if gender and / or income affects the total amount of help given to a stranger who is sitting on the side of a busy road with a sign asking for help. The independent variables are gender, income, and the interaction of gender and income. The dependent variable is total help. He wants to know if one or both factors – or the interaction of the two - affects the total amount of help offered. Because he is analyzing two independent variables (gender and income), he used a factorial ANOVA. His results show the main effect of each of the independent variables on the dependent variable (total help) and the interaction effect. The researcher is using a 95% confidence interval which means that he wants to be at least 95% sure that his independent variables…
In an ABA design, the second stage is used to: reduce the chance that fatigue effects will occur manipulate the independent variable measure the effect of the dependent variable establish a baseline
The equation Y= α+ βx+ε describes a population regression line. Which of the statements regarding this equation is true. A. ε is the coefficient of standard deviation B. α,β are sample statistics that can be calculated by the ordinary least squares method C. α,β are usually unknown since they are population quantities D. None of the statements above are true
7
Answer part a and b
(150)4. HBK, a food industry company wants to build a forecasting model to predict the sales of its hot beverage. HBK had the last weekly sales for the past 152 weeks. Using the time series components for trend (variable called tp) and seasonal--monthly dummy variables (using Dec as a baseline) and the causal variable of average weekly temperature HBK management build the model on the following page. Note the average hot-beverage weekly sales is $91,500. a. Evaluate the model on the following page, i.e., is it a good model? If so, why, or if not, why? Consider all the appropriate tests, use a = 0.05 for t test and a = 0.05 for F test. Notice on the following page is a plot of the residuals. DO ALL APPROPRIATE TESTS--COMPLETELY!!!!
The Cadet is a popular model of sport utility vehicle, known for its relatively high resale value. The bivariate data given below were taken from a sample of Cadets, each bought new two years ago, and each sold used within the past month. For each Cadet in the sample, we have listed both the mileage x (in thousands of miles) that the Cadet had on its odometer at the time it was sold used and the price y (in thousands of dollars) at which the Cadet was sold used. With the aim of predicting the used selling price from the number of miles driven, we might examine the least-squares regression line, =y−41.990.51x . This line is shown in the scatter plot below. Based on the sample data and the regression line, complete the following. (a)For these data, mileages that are less than the mean of the mileages tend to be paired with used selling prices that are ▼(Choose one) the mean of the used selling prices. (b)According to the regression equation, for an increase of…
#31). Both pictures are the same problem.
Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from heights of 134 to 195 cm and weights of 38 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x- 167.55 cm, y 81.36 kg, r= 0.407, P-value = 0.000, and y = - 109 + 1.09x. Find the best predicted value of y (weight) given an adult male who is 140 cm tall. Use a 0.01 significance level. %3D The best predicted value of y for an adult male who is 140 cm tall is kg. (Round to two decimal places as needed.) Enter your answer in the answer box. MacBook Pro 吕0 O00 esc %23 24 % & delet 8. 6. 4. E T. Y. D F H. K P
Hi there! Is there anyone on here confident on SPSS that would be able to help?

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