A company is testing the effectiveness of three new pills used to treat high blood pressure. 30people with high blood pressure were selected. The 30 people were then divided into threegroups of 10 each. Each person in a subgroup was given one of these pills. The number ofpoints by which each person's blood pressure was reduced after one month of use is as follows:PILLAPILL C152117161416142117153930233192523192739PILL B29121518211512211829Is there a significant difference in the ability of each of these drugs to reduce blood pressure?(Use a .05 level of significance.)Manager Signature1290 0507/01/2022 12:0PMSTORE COPY

Anova is used to measure the mean significance. It used to compare three or more groups means. It is…

Answered: A company is testing the effectiveness…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.5: Interpreting Data

Problem 1C

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List the sample space of each experiment. Picking a one-digit number
A group of eight individuals with high cholesterol levels were given a new drug that was designed to lower cholesterol levels. Cholesterol levels, in milligrams per deciliter, were measured before and after treatment for each individual, with the following results: Before: 281, 230, 284, 289, 258, 270, 234, 287. After: 216, 211, 174, 208, 166, 222, 197, 192. Construct 899.8% confidence and vote for the main reduction in cholesterol level. What do you represent the cholesterol level before treatment minus the cholesterol level after. He situated for a calculator and round the answers to at least one decimal place. A 99.8% confidence in a while for the main reduction and cholesterol level is ?
100,000 randomly selected adults were asked whether they drink at least 48 oz of water each day and only 45% said yes. Identify the sample and population.
A certain virus affects 0.5% of the population. A test used to detect the virus in a person is positive 90% of the time if the person has the virus (true positive) and 15% of the time if the person does not have the virus (false positive). Fill out the remainder of the following table and use it to answer the two questions below based on a total sample of 100,000 people. Virus No Virus Total Positive Test Negative Test Total 100,000 a) Find the probability that a person has the virus given that they have tested positive. Round your answer to the nearest hundredth of a percent and do not include a percent sign. % b) Find the probability that a person does not have the virus given that they test negative. Round your answer to the nearest hundredth of a percent and do not include a percent sign.
Forty students na dass at an Intemational high school were surveyed about which non-English language they can speak Complete the table. Foreign Language Gender Chinese Spanish French Total Girl 5. Boy 4 17 Total 40
(Use SPSS) Hanover County is known for many things, but one of the most popular is the Hanover "Better Boy" tomato. The agricultural extension office conducted a study to determine the best locations in the county to grow "Better Boy" tomatoes. Eleven tomato farms throughout the county were randomly selected, and the following information was collected at each farm: X1-moisture retention of soil (%), X2-pH of the soil, X3-nitrogen content of the soil (%), X4-depth of topsoil (cm), and Y-quality score of tomatoes harvested. Perform the complete appropriate analysis (i.e., choose the best model for predicting total winnings and check all assumptions) - be sure to fit the best model using a 10% significance level for any hypothesis tests. [You do not need to make any predictions]. X1 18 56 28 22 19 43 31 18 20 26 19 X2 6.5 6.2 6.9 6.4 6.0 6.2 6.5 6.1 7.1 6.9 6.3 X3 5.1 6.0 5.7 6.7 5.2 4.8 4.3 6.4 4.9 6.2 6.5 X4 40 85 69 90 83 28 41 87 79 76 90 Y 420 609 444 872 543 350 296 702 518 627 683
According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician wanted to know whether mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies. She randomly selected 240 births for which the mother was 35 to 39 years old and found 26 low-birth-weight babies. Complete parts (a) through (c) below. Họ: 0.071 Hy: 0.071 Use technology to compute the P-value for this test. Use the Tech Help button for further assistance. P-value = (Round to three decimal places as needed.) State a conclusion for this test in the context of the obstetrician's question. Choose the correct answer below. O A. Do not reject the null hypothesis. There is sufficient evidence to conclude that mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies at the a = 0.05 level of significance. B. Reject the null hypothesis. There is sufficient evidence to conclude that mothers between the ages of…
A consumer group wanted to determine if there was a difference in customer perceptions about prices for a specific type of toy depending on where the toy was purchased. In the local area there are three main retailers: W-Mart, Tag, and URToy. For each retailer, the consumer group randomly selected 5 customers, and asked them to rate how expensive they thought the toy was on a 1-to-10 scale (1= not expensive, to 10 = very expensive). The toy was priced the same at all retail stores. The data collected is reported in the table below. W-Mart Tag URToy 8 5 4 9 4 2 10 6 1 9 3 5 9 5 4 MW = 9 MT = 4.6 MU = 3.2 SSW = 2 SST = 5.2 SSU = 10.8 What kind of statistical test should be used to test the consumer group's research goal, assuming that the researcher wanted to use the 1-to-10 scale as a numerical interval measure? Compute the percentage of variance explained by the group differences for these data. Percentage and…
A consumer group wanted to determine if there was a difference in customer perceptions about prices for a specific type of toy depending on where the toy was purchased. In the local area there are three main retailers: W-Mart, Tag, and URToy. For each retailer, the consumer group randomly selected 5 customers, and asked them to rate how expensive they thought the toy was on a 1-to-10 scale (1= not expensive, to 10 = very expensive). The toy was priced the same at all retail stores. Compute the percentage of variance explained by the group differences for these data. Q: Percentage and variance explained = ?
A consumer group wanted to determine if there was a difference in customer perceptions about prices for a specific type of toy depending on where the toy was purchased. In the local area there are three main retailers: W-Mart, Tag, and URToy. For each retailer, the consumer group randomly selected 5 customers, and asked them to rate how expensive they thought the toy was on a 1-to-10 scale (1= not expensive, to 10 = very expensive). The toy was priced the same at all retail stores. 1. What kind of statistical test should be used to test the consumer group's research goal, assuming that the researcher wanted to use the 1-to-10 scale as a numerical interval measure? A. Repeated-measures t-test B. One-way Independent Measures ANOVA C. Repeated-measures ANOVA D. Independent-measures t-test 2. State the hypothesis that aims to test the consumer group’s research goal (i.e., what is H0 and HA).
Ten randomly selected cars were filled with either regular or premium gas (the decision was made based on a coin toss) and then driven on the freeway for the entirety of the tank of gas. The next day, each car was filled with whichever type of gas that was not used the previous day and then driven on the freeway for the entirety of the tank of gas. The mileage for each day was recorded and is summarized in the table below. MPG of 10 cars (regular/premium): 13/19, 20/22, 21/24, 23/25, 22/25, 27/26, 25/26, 27/28, 28/32, 22/24. Car 1 Car 2 Car 3 Car 4 Car 5 Car 6 Car 7 Car 8 Car 9 Car 10 Regular 16 20 21 23 22 27 25 27 28 22 Premium 19 22 24 25 25 26 26 28 32 24 You will be constructing a 90% confidence interval estimate of the difference between the mean efficiency of the car using regular and premium gas. You may assume that both samples are drawn from normally distributed populations. The mean of the differences between the two samples is . Round your answer to 3…
...................... .. Each person in a large sample of German adolescents was asked to indicate which of 50 popular movies they had seen in the past year. Based on the response, the amount of time (in minutes) of alcohol use contained in the movies the person had watched was estimated. Each person was then classified into one of four groups based on the amount of movie alcohol exposure (groups 1, 2, 3, and 4, with 1 being the lowest exposure and 4 being the highest exposure). Each person was also classified according to school performance. The resulting data is given in the accompanying table. Alcohol Exposure Group 1 2 3 4 Excellent 111 95 51 66 School Good 328 326 318 297 Performance Average/Poor 239 258 314 318 Assume it is reasonable to regard this sample as a random sample of German adolescents. Is there evidence that there is an association between school performance and movie exposure to alcohol? Carry out a hypothesis test using a = 0.05. Calculate the test statistic.…

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