By using t-test configure if there is a significant differences between a random person blood glucose tests after 30 minutes and after 120 minutes of eating meal?
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- Is there a significant difference on the ratings of the respondents on X11 when grouped according to X2? Statement of the Problem: Is there a significant difference on Productline – X11 when grouped according to Industry Type – X2? Null Hypothesis: There is no significant difference on Productline – X11 when grouped according to Industry Type – X2. Note: The coding for Industry Type is 0 for Magazine Industry and 1 for Newsprint Industry. interpret the T-Test resultsA researcher estimates that the average height of buildings of 30 or more stories in a large city is at least 700 feet. A random sample of 10 buildings is selected, and the heights in feet are shown. At α = 0.025, is there enough evidence to reject the claim? 485 511 841 725 615 520 535 635 616 582A researcher used one-factor ANOVA for independent samples to examine effectiveness of four workout videos. Students who enrolled to the study were randomly divided into four groups with n = 10 participants in each group. Each group exercise to a different workout video and afterwards, all participants completed a survey evaluating the effectiveness of their workout. The partial results of the ANOVA conducted on the collected data are shown in the summary table below: Source SS df MS F Between Treatments ____ ____ ____ ____ Within Treatments 117 ____ ____ Total 159 Part A. Fill in the missing values in the ANOVA Summary table above (see highlighted). Hint. Start from finding the df values for…
- The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product. To investigate, the owner randomly selected eight outlets and sold the MP3 player at the reduced price. At seven randomly selected outlets, the MP3 player was sold at the regular price. Reported below is the number of units sold last month at the regular and reduced prices at the randomly selected outlets. Regular price 138 121 88 115 141 125 96 Reduced price 128 134 152 135 114 106 112 120 Click here for the Excel Data File At the 0.01 significance level, can the manufacturer conclude that the price reduction resulted in an increase in sales? Hint: For the calculations, assume reduced price as the first sample. Compute the pooled estimate of the variance. (Round your answer to 3 decimal places.) Compute the test statistic. (Round your answer to 2 decimal places.) State your decision about…The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product. To investigate, the owner randomly selected eight outlets and sold the MP3 player at the reduced price. At seven randomly selected outlets, the MP3 player was sold at the regular price. Reported below is the number of units sold last month at the regular and reduced prices at the randomly selected outlets. Regular price 138 121 88 115 141 125 96 Reduced price 128 134 152 135 114 106 112 120 Click here for the Excel Data File At the 0.01 significance level, can the manufacturer conclude that the price reduction resulted in an increase in sales? Hint: For the calculations, assume reduced price as the first sample. Compute the pooled estimate of the variance. (Round your answer to 3 decimal places.) Compute the test statistic. (Round your answer to 2 decimal places.)A study found that in 2005 12.5% of US workers belonged to unions. Suppose a sample of 500 US workers is collected in 2006 to determine whether union efforts to organized have increased union membership. Formulate the hypothesis that can be used to determine whether union membership increased in 2006. If the sample results show that 80 of the workers belonged to unions, what is the p-value for your hypothesis test? At =0.05 what is your conclusion?
- The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product. To investigate, the owner randomly selected eight outlets and sold the MP3 player at the reduced price. At seven randomly selected outlets, the MP3 player was sold at the regular price. Reported below is the number of units sold last month at the regular and reduced prices at the randomly selected outlets. Regular price 131 124 89 113 114 125 94 Reduced price 125 132 111 107 115 124 136 132 At the 0.050 significance level, can the manufacturer conclude that the price reduction resulted in an increase in sales? Hint: For the calculations, assume reduced price as the first sample. Compute the pooled estimate of the variance. (Round your answer to 3 decimal places.) Compute the test statistic. (Round your answer to 2 decimal places.) State your decision about the null hypothesis. multiple choice Fail to reject H0 Reject H0The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product. To investigate, the owner randomly selected eight outlets and sold the MP3 player at the reduced price. At seven randomly selected outlets, the MP3 player was sold at the regular price. Reported below is the number of units sold last month at the regular and reduced prices at the randomly selected outlets. Regular price 134 125 86 111 118 129 97 Reduced price 129 136 152 134 115 127 133 133 At the 0.010 significance level, can the manufacturer conclude that the price reduction resulted in an increase in sales? Hint: For the calculations, assume reduced price as the first sample. Compute the pooled estimate of the variance. (Round your answer to 3 decimal places.) Compute the test statistic. (Round your answer to 2 decimal places.) State your decision about the null hypothesis.An automobile dealer conducted a test to determine if the time in minutes needed to complete a minor engine tune-up depends on whether a computerized engine analyzer or an electronic analyzer is used. Because tune-up time varies among compact, intermediate, and full-sized cars, the three types of cars were used as blocks in the experiment. The data obtained follow. Analyzer Computerized Electronic Computer 51 41 Intermediate 54 44 Full-sized 63 47 Find the value of the test statistic. Find the p-value.
- An experiment was conducted to test whether students’ performance (above or below average) is independent of stress level as a result of pressure on time table for the term in Hwanhwan Senior High School. The table below gives a 3 × 2 contingency table of the sample. Above Average Average Below Average Total Stressed 135 250 285 670 Not Stressed 150 157 107 414 Total 285 407 392 1084 With the help of chi-square test statistics, determine whether students' performance for the selected term in the school is independent of their stressed level experienced from the time table at α = 0.05A physical fitness club evaluates a diet program, then randomly selects 10 members to follow the training program for 3 months.The data taken is body weight before and after the diet program is implemented shown on table enclosed : Can this diet program reduce weight more than 5 kg?Do the test at the 5% level of significance!Results of a poll of a random sample of 3003 American adults showed that 20% do not know that caffeine contributes to dehydration. The poll was conducted for the Nutrition Information Center and had a margin of error of ± 1.4%.
