QUESTION 1 A fitness center claims that the mean amount of time that a person spends at the gym per visit is 33 minutes. Identify the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the parameter μ. Select the correct answer below: H0: μ≠33; Ha: μ=33 H0: μ=33; Ha: μ≠33 H0: μ≥33; Ha: μ<33 H0: μ≤33; Ha: μ>33 QUESTION 2 The answer choices below represent different hypothesis tests. Which of the choices are right-tailed tests? Select all correct ans...

Question True or False: The more samples taken in a scientific study, the longer the amount of time it will take to complete the research on the samples. Select the correct answer below: True False QuestioN Which of the following situations could have a regression line with a negative y-intercept? Select all that apply: The present value of an insurance policy as a function of the age of the ensured person if the person purchases the policy when he or she is 50 year...

Week 8 Assignment Coefficient of Determination Question A medical experiment on tumor growth gives the following data table. x y 57 38 61 50 63 76 68 97 72 113   The least squares regression line was found. Using technology, it was determined that the total sum of squares (SST) was 3922.8 and the sum of squares of regression (SSR) was 3789.0. Calculate R2, rounded to three decimal places. Provide your answer below:   Q...

Week 8 Assignment Linear Regression Equations Question Daniel owns a business consulting service. For each consultation, he charges $95 plus $70 per hour of work. A linear equation that expresses the total amount of money Daniel earns per consultation is y=70x+95. What are the independent and dependent variables? What is the y-intercept and the slope? Select the correct answer below: The independent variable (x) is the amount, in dollars, Daniel earns for a consultation. The depende...

Week 8 Assignment Performing Linear Regressions with Technology Question The table below shows data on annual expenditure, x (in dollars), on recreation and annual income, y (in dollars), of 20 families. Use Excel to find the best fit linear regression equation. Round the slope and intercept to the nearest integer. Question An economist is studying the link between the total value of a country's exports and that country's gross domestic product, or GDP. The economist recorded th...

Week 8 Assignment  Predictions Using Linear Regression Question The table shows data collected on the relationship between the time spent studying per day and the time spent reading per day. The line of best fit for the data is yˆ=0.16x+36.2. Assume the line of best fit is significant and there is a strong linear relationship between the variables. According to the line of best fit, what would be the predicted number of minutes spent reading for someone who spent 67minutes studyi...

Week 8 Discussion: Correlation and Regression Required Resources Read/review the following resources for this activity: Textbook: Chapter 13 Lesson Minimum of 1 scholarly source In your reference for this assignment, be sure to include both your text/class materials AND your outside reading(s). Initial Post Instructions If a regression analysis was to be completed on body mass index (BMI), what could be an independent variable in that analysis? Why? If w...

Required Resources Read/review the following resources for this activity: OpenStax Textbook: Chapter 8 Lesson Chamberlain University Library Scenario/Summary The highlight of this week's lab is confidence intervals and the use of these intervals in the health sciences. There is a short reading that specifically relates confidence intervals to health sciences and then you are asked to demonstrate your knowledge of confidence intervals by applying them in a practical manner. ...

Week 7 Assignment Construct Hypothesis Test for Proportions Question Steve listens to his favorite streaming music service when he works out. He wonders whether the service's algorithm does a good job of finding random songs that he will like more often than not. To test this, he listens to 50 songs chosen by the service at random and finds that he likes 32 of them. Use Excel to test whether Steve will like a randomly selected song more often than not, and then draw a conclusion in the...

Week 7 Assignment Conducting a Hypothesis for Mean-Population Standard Deviation Known P Value Approach Question What is the p-value of a two-tailed one-mean hypothesis test, with a test statistic of z0=−1.73? (Do not round your answer; compute your answer using a value from the table below.) z−1.8−1.7−1.6−1.5−1.40.000.0360.0450.0550.0670.0810.010.0350.0440.0540.0660.0790.020.0340.0430.0530.0640.0780.030.0340.0420.0520.0630.0760.040.0330.0410.0510.0620.0750.050.0320.0400.0490.0610.0740....