Carbohydrates in Candies. The number of grams of carbohydrates contained in 1-ounce servings of randomly selected chocolate and nonchocolate candy is listed here. Is there sufficient evidence to conclude that the difference in the means is significant? Use Alpha= 0.05. Chocolate: 29 25 17 36 41 25 32 29 38 34 24 27 29 Nonchocolate: 41 41 37 29 30 38 39 10 29 55 29
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Carbohydrates in Candies. The number of grams of carbohydrates contained in 1-ounce servings of randomly selected chocolate and nonchocolate candy is listed here. Is there sufficient evidence to conclude that the difference in the means is significant? Use Alpha= 0.05. Chocolate: 29 25 17 36 41 25 32 29 38 34 24 27 29 Nonchocolate: 41 41 37 29 30 38 39 10 29 55 29
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- The average national salary is 45,000 (in this example, 45 represents 45,000). I take a sample of 14 individuals in San Angelo and measure their average salary and obtain the following data: Individual 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Salary 45 56 60 65 60 63 54 51 27 29 34 35 35 37 Conduct a test (at an alpha of .05) to answer whether or not San Angelonian’s salary is significantly greater than the national average. Null (H0): ________________________________ Alternative (Ha): ________________________________ Degrees of freedom (from calculation/Jamovi): ____________A doctor would like to evaluate whether flu-frequency is different among patients of various ages. He groups his most recent 12 patients into four groups according to age (pediatric, young adult, older adult, senior), and counts the frequency of their flu-related visits. Below is his data. Test the hypothesis that flu frequency is different among pediatric, adult, older adult, and senior patients using an alpha level of .01. Pediatric. Young Adult. Older Adult. Senior 6 2 4 7 4 1 0 9 5 0 0 12 d. Find the critical value: e. Calculate the obtained statistic: f. Make a decision: g. What does your decision mean? h.…Dr. Stevenson reported the following in a journal: “F (4, 106) = 10.09, p = .04.” Should Dr. Stevenson state that there are significant differences among the variable means at a .01 alpha level?
- A doctor would like to evaluate whether flu-frequency is different among patients of various ages. He groups his most recent 12 patients into four groups according to age (pediatric, young adult, older adult, senior), and counts the frequency of their flu-related visits. Below is his data. Test the hypothesis that flu frequency is different among pediatric, adult, older adult, and senior patients using an alpha level of .01. Pediatric. Young Adult. Older Adult. Senior 6 2 4 7 4 1 0 9 5 0 0 12 g. What does your decision mean? h. Paste your SPSS output here: i. Explain how the Sig. value in your SPSS output leads you to…In reporting the results of a statistical analysis, a researcher reports that "p = .33". This implies that ________. a. the alternative hypothesis was accepted with an alpha level of .05 b. the alternative hypothesis was not accepted with an alpha level of .05 c. the null hypothesis was not rejected with an alpha level of .05 d. the null hypothesis was rejected with an alpha level of .05Let n1=40, X1=10, n2=40, and X2=20. Complete parts (a) and (b) below. a. At the 0.05 level of significance, is there evidence of a significant difference between the two population proportions? Determine the null and alternative hypotheses. Choose the correct answer below. A. H0: π1≤π2 H1: π1>π2 B. H0: π1≥π2 H1: π1<π2 C. H0: π1≠π2 H1: π1=π2 D. H0: π1=π2 H1: π1≠π2 Calculate the test statistic, ZSTAT, based on the difference p1−p2. The test statistic, ZSTAT, is ? (Type an integer or a decimal. Round to two decimal places as needed.) Calculate the p-value. The p-value is ? (Type an integer or a decimal. Round to three decimal places as needed.) b. Construct a 95% confidence interval estimate of the difference between the two population proportions. ?≤π1−π2≤? (Type integers or decimals. Round to four decimal places as needed.)
- Given the following data and using Jamovi, test (at an alpha of 0.05) whether type of music influences heart rate (measured in beats per minute, bpm). Participant Rock Classical Heavy Metal ROW MEANS = 1 70 64 90 74.67 2 78 69 85 77.33 3 80 72 67 73 4 82 65 100 82.33 5 81 67 120 89.33 6 80 58 98 78.67 GROUP MEANS = 78.5 65.83 93.33 Total mean = 79.22 What are the degrees of freedom for between persons? ________ What is the critical value (from table): ___________________Are seatbelts effective at saving lives? We wish to examine whether or not the use of seatbelts reduces fatalities at the alpha = 0.05 level of significance. Let p N represent the proportion of non-seatbelt wearing passengers who were involved in a crash and died and represent the proportion of seatbelt wearing passengers who were involved in a crash and died. 1. Which would be correct hypotheses for this test? H 0 :p N =p Y ,H 1 :p N <p Y O H 0 :p N =p Y ,H 1 :p N ne p Y H 0 :p N =p Y ,H 1 :p N > mathfrak P Y O H 0 :p N ne p Y , H 1 :p N >p Y In a random sample of 335 non-seatbelt wearing passengers involved in a car crash, 34 were killed. In a random sample of 398 seatbelt wearing passengers involved in a car crash , 18 were killed. 2. Find the test statistic (2 decimal places) 3. Give the P-value (4 decimal places) please only answer 2 and 3!A doctor would like to evaluate whether flu-frequency is different among patients of various ages. He groups his most recent 12 patients into four groups according to age (pediatric, young adult, older adult, senior), and counts the frequency of their flu-related visits. Below is his data. Test the hypothesis that flu frequency is different among pediatric, adult, older adult, and senior patients using an alpha level of .01. Pediatric. Young Adult. Older Adult. Senior 6 2 4 7 4 1 0 9 5 0 0 12 a. What test is appropriate? b. State your null hypothesis: c. State your alternative hypothesis. d. Find the critical value:…
- The following data are from a repeated-measures experiment comparing three different treatment conditions. Participant Treatment A Treatment B Treatment C A 0 1 2 B 2 5 5 C 1 2 6 D 5 4 9 E 2 8 8 TA= 10 TB= 20 TC= 30 G= 60 SSA= 14 SSB= 30 SSc= 30 SStotal=370 Conduct a repeated measures ANOVA with alpha =.05 to determine whether there are any difference between the means. Show work for all intermediary steps and include a source table for the ANOVA and calculate the partial η2 for the effect of treatment on scores. conduct any post hoc tests to determine mean differences (if the ANOVA is significant). Set up a dataset on SPSS with data from the last problem. Calculate the ANOVA and partial η2 and report the F statistic in APA format:ONE-SAMPLE WILCOXON SIGNED RANK TEST A food inspector examines 16 jars of certain brand of jam to determine the % of foreign impurities. The following data were recorded: 2.6 2.4 3.2 2.3 2.4 1.3 1.1 2.6 1.8 1.2 4.3 2.0 1.8 3.7 1.7 2.4 Use the one sample Wilcoxon signed rank at 0.05 level of significance to test the null hypothesis that the % of impurities in this brand of jam is 2.5% against the alternative hypothesis that the % of impurities is not 2.5%The owner of a hair salon is curious about the relationship between the amount of hair cut and the amount of money earned by the stylists. At the end of a randomly selected day, she weighed the amount of hair around the chairs of her eight stylists and counted their earnings. Using the data below, an alpha of .05 and a two-tailed test, was there a significant relationship? Pounds of hair Earnings 1 195 10 223 2 150 8 165 4 104 7 130 5 60 6 100 M = 5.38s = 3.02 M = 5.00s = 3.16