### Recovering from Surgery: Comparing New and Standard Treatments#### Study Overview:A new postsurgical treatment was compared with a standard treatment. Seven subjects received the new treatment, while seven others (the controls) received the standard treatment. The recovery times, in days, for each group are presented below.#### Recovery Times in Days:**Treatment Group:**- 12, 13, 15, 19, 20, 21, 24**Control Group:**- 18, 23, 24, 30, 32, 35, 39#### Data Transfer Option:- [Button labeled "Send data to Excel"]#### Hypothesis Testing:**Objective:**Can you conclude that the mean recovery time for those receiving the new treatment is less than the mean for those receiving the standard treatment? Let $\mu_1$ denote the mean recovery time for the new treatment.Use the $\alpha = 0.05$ level of significance and the TI-84 Plus calculator.---### Part 1 of 4:**State the null and alternate hypotheses:**- **Null Hypothesis ($H_0$):** - $\mu_1 \geq \mu_2$ - **Alternative Hypothesis ($H_1$):** - $\mu_1 < \mu_2$### Graphs and Diagrams:This section does not contain any graphs or diagrams. ---### Instructions for Students:1. **Understand the Hypotheses:** - The null hypothesis ($H_0$) states there is no decrease in the mean recovery time for the new treatment compared to the standard treatment. - The alternative hypothesis ($H_1$) posits that the mean recovery time is indeed less for the new treatment.2. **Use Statistical Tools:** - To test these hypotheses, you would typically calculate the sample means and variances of the two groups and perform a t-test for the difference in means. - Make sure to use the given level of significance ($\alpha = 0.05$) in your calculations to determine if the results are statistically significant.3. **Interpreting Results:** - If you reject the null hypothesis, it would suggest that the new treatment reduces recovery time compared to the standard treatment. - If you fail to reject the null hypothesis,

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Answered: Recovering from surgery: A new…

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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Dex Research Limited conducted a research to investigate consumer characteristics that can be used to predict the amount charged by credit card users. The following multiple regression output is based on a data collected by this research company on annual income, household size and annual credit card charges for a sample if 50 consumers. Regression Statistics Multiple R 0.9086 R Square A Adjusted R Square 0.8181 Standard Error 398.091 Observations B ANOVA df SS MS F Significance F Regression 2 C E G 1.50876E-18 Residual D 7448393 F Total 49 42699149 Coefficients Standard Error t Stat P-Value Intercept 1304.9048 197.6548 6.6019 3.28664E-08 Income ($1000s) 33.1330 3.9679 H 7.68206E-11 Household size 356.2959 33.2009 10.7315 3.12342E-14 a. Complete the missing entries from A to H in this outputb. Estimate the annual credit card charges…
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Using the data below,suppose we focus on the proportions of patients who show improvement.Is there a statistically significant difference in the proportions of patients who show improvement between treatments 1 and 2. Run test at 5% level of significance. Symptoms worsened No Effect Symptoms Improved total Treatment 1 22 14 14 50 Treatment 2 14 9 21 50 Treatment 3 9 12 29 50
Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore, and recorded the number of pages in each textbook and its cost. The bivariate data is shown below, Number of Pages (x) Cost(y) 962 93.96 246 25.68 803 62.24 907 80.56 640 68.2 944 77.52 847 78.76 919 71.52 591 59.28 393 47.44 476 42.08 A student calculates a linear model (Please show your answers to two decimal places) Use the model above to estimate the cost when number of pages is 955 Cost - $ (Please show your answer to 2 decimal places.) Submit Question F5 F6 F7 F8 F9 F3
How much would you expect systolic blood pressure to change if a person commits to reducing their cigarette consumption by 1 cigarette per day?
W 1. X A tablet computer manufacturer claims that its batteries last an average of 10.5 hours when playing videos. The quality control department randomly selects 20 tablets from each day's production and tests the batteries by playing a video repeatedly until the battery dies. The quality control department will reject the batteries from that day's production run if the mean battery life is less than 10.5 hours. Here are the data from one day: 10.3 10.0 10.3 10.6 10.5 10.3 10.1 10.6 11.5 10.3 10.3 12.7 10.6 11.3 13.9 12.5 12.4 10.8 10.2 12.2 The quality control department will test the hypotheses where p true mean battery life (in hours) while playing videos for tablets made during that day. Check that the conditions for performing the test are met. Assume the population is normally distributed. 3 e d C Ho:μ = 50 Ha:μl < 50 $ 4 f 25 % V t 6 (6 b Y h ∞ 7 u n * 00 8 ¡ m ( 9 k O Sign out 1 р Mar 29 7
SPSS Output? What would the APA Writeup be?
Using the data below, suppose we focus on the proportions of patients who show improvement. Is there a statistically significant difference in the proportions of patients who show improvement between treatments 1 and 2? Run the test at a 5% level of significance. Symptoms worsened No effect Symptoms improved Total Treatment 1 22 14 14 50 Treatment 2 14 15 21 50 Treatment 3 9 12 29 50
Dex Research Limited conducted a research to investigate consumer characteristics that can be used to predict the amount charged by credit card users. The following multiple regression output is based on a data collected by this research company on annual income, household size and annual credit card charges for a sample if 50 consumers. Regression Statistics Multiple R 0.9086 R Square A Adjusted R Square 0.8181 Standard Error 398.091 Observations B ANOVA df SS MS F Significance F Regression 2 D E G 1.51E-18 Residual C 7448393 F Total 49 42699149 Coefficients Standard Error t Stat P-value Intercept 1304.9048 197.6548 6.6019 3.29E-08 Income ($1000s) 33.133 3.9679 H 7.68E-11 Household Size 356.2959 33.2009 10.7315 3.12E-14 a. Complete the missing entries from A to H in this output b. Estimate the annual credit card charges for a three-person household with an annual income of $40,000.c. Did the estimated regression…
HypertensionA hypertensive patient has been on antihypertensive medication for several years. Her physician wants to monitor herblood pressure via weekly measurements taken at home.Each week for 6 weeks she takes several blood pressurereadings and averages the readings to get a summary bloodpressure for the week. The diastolic blood pressure (DBP)results are shown in Table 6.15.Table 6.15 Weekly mean DBP readingsfor an individual patientWeek Mean DBP Mean DBP (mm Hg) Week (mm Hg)1 89 4 842 88 5 823 81 6 89.5Mean 85.75sd 3.66 6.106 What is the probability that the sample mean will bewithin 1 unit of the population mean?6.107 Suppose we want to choose a large enough sampleso that the sample mean is within 1 unit of the populationmean 99% of the time. What is the minimum sample size toachieve this goal? Suppose the incidence rate of myocardial infarction (MI)was 5 per 1000 among 45- to 54-year-old men in 2000.To look at changes in incidence over time, 5000 men in thisage group were…

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