Treatment Student 1 2 3 4 5 6 7 8 9 10 11 12 13 Rested 9 11 15 13 11 10 8 16 13 10 10 9 7 7 6 7 9 9 9 6 8 14 7 9 5 8 7 Difference 3 4 6 4 2 4 0 26 1 4 -1 0 Sleep Deprived
Q: ..... ner her right hand or her left hand, what proportion of correct responses would be expected if…
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Q: Use a 10% level of significance to test the claim that there is no difference in mental alertness…
A: Group A Group B (x-xbar)^2 (y-ybar)^2 77 57 32.80165 162.5625 93 82 472.0744 150.0625 75 84…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: (a) Obtain the proportion of correct responses that would be expected if the random guesses made…
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Q: c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of…
A: The best point estimate of the therapists success rate is 0.481.
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A: Formula : df_between-groups = k-1 df_within-groups = N-k
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Given: Number of events (x) = 152 Number of trials (x) = 326
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A: GIven, The data set is: X1 X2 X3 14 25 45 28 22 33 27 17 30 31 14 41 K = 3…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Given:1. Emily conducted an experiment with 304 trials.2. She used a coin toss to select either her…
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A: here use matched pair t test because sample remain same but treatment on same sample performed
Q: a. Given that Emily used a coin toss to select either her right hand or her left hand, what…
A: a. When a coin is tossed there are two possible outcomes either right or left.
Q: A psychologist has developed a mental alertness test. She wishes to study the effects (if any) of…
A: Thank you for posting this question! Since it contains multiple sub-parts, I will answer the first…
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A: treated with resithan : n1 = 575x1 = 226treated with exemor : n2 = 508x2 = 160α = 0.10claim : p1…
Q: To study the effectiveness of possible treatments for insomnia, a sleep researcher conducted a study…
A: Given: Sr. No. x1 x2 x3 1 14 25 45 2 28 22 33 3 27 17 30 4 31 14 41
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
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A: We use F distribution table to find the critical value.
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A: According to our policy we can answer only first question for remaining please repost the question
Q: In a science fair project. Emily conducted an experiment in which she tested professional touch…
A: The question is about Sample proportion Given : No. of trials ( n ) = 329 No. of times therapist…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Sample size (n) = 342 Selected sample (x) = 161
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Q: Group SEM Alcohol 25 0.25 0.05 Placebo 25 0.12 0.03
A: Given data: For the group Alcohol, n1=25x¯1=0.25SEM= 0.05 For the group Placebo, n2=25x¯2=0.12SEM=…
A group of college students volunteered to participate in a study investigating the effect of sleep deprivation on fine motor tasks. Each student was assigned to each of two treatments: staying awake all night and getting a full night’s sleep. The next morning at 8:00 a.m., the students are asked to thread as many needles as possible in five minutes. The treatments are administered on the first Saturday of consecutive months, and the order of the treatments is assigned to each student at random. The data table shows the number of needles successfully threaded by each student.
A 95% confidence interval for the
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- A psychologist has developed a mental alertness test. She wishes to study the effects (if any) of type of food consumed on mental alertness. Twenty-one volunteers were randomly divided into two groups. Both groups were told to eat the amount they usually eat for lunch at noon. At 2:00 P.M., all subjects were given the alertness test. Group A had a low-fat lunch with no red meat, lots of vegetables, carbohydrates, and fiber. Group B had a high-fat lunch with red meat, vegetable oils, and low fiber. The only drink for both groups was water. The test scores are shown below. Group A 67 93 82 69 76 47 43 58 92 63 52 Group B 70 57 75 59 66 49 55 46 45 91 89 72 Use a 10% level of significance to test the claim that there is no difference in mental alertness distributions based on type of lunch. (a) What is the level of significance? (b) Compute the sample test statistic. (Use 2 decimal places.) (c) Find the P-value of the sample test statistic. (Use 4 decimal places.)In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 331 trials, the touch therapists were correct 159 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? (Type an integer or decial. Do not round)Healthy men aged 21–35 were randomly assigned to one of two groups: half received 0.82 gram of alcohol per kilogram of body weight; half received a placebo. Participants were then given 30 minutes to read up to 34 pages of Tolstoy’s War and Peace (beginning at Chapter 1, with each page containing approximately 22 lines of text). Every two to four minutes, participants were prompted to indicate whether they were “zoning out.” The proportion of times participants indicated they were zoning out was recorded for each subject. The following table summarizes data on the proportion of episodes of zoning out. Group n S Alcohol 25 0.25 0.05 Placebo 25 0.12 0.03 Do we have evidence to claim that two groups have different means?
- In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 310 trials, the touch therapists were correct 149 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? (Round to three decimal places as needed.) c. Using Emily's sample results, construct a 95% confidence interval estimate of the proportion of correct responses made by touch therapists. |Hypnosis. A sample of 100 people was separated into children and adults. The members of each group were randomly assigned to two different hypnosis exercises. The responses of each person were recorded at the completion of the experimentIn a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 312 trials, the touch therapists were correct 151 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? (Round to three decimal places as needed.) c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of correct responses made by touch therapists.I ONLY NEED HELP ON D and E thank you#10).In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 303 trials, the touch therapists were correct 144 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of correct responses made by touch therapists. d. What do the results suggest about the ability of touch therapists to select the…Many golfers wear wrist bracelets containing magnets because they claim the magnets improve balance and the length of shots played off the tee. A golfer would like to determine if the claim has merit and finds 200 volunteers who play golf to participate in an experiment. Half of the golfers are randomly assigned to wear a bracelet with magnets, while the other half wear a bracelet without magnets. Each golfer plays normally for a month, after which the length of their shots in a subsequent round is recorded. What is the response variable in this experiment? the age of each golfer the 200 volunteers the length of shots played by the golfers whether the golfers wear or do not wear the braceletA psychologist has developed a mental alertness test. She wishes to study the effects (if any) of type of food consumed on mental alertness. Twenty-one volunteers were randomly divided into two groups. Both groups were told to eat the amount they usually eat for lunch at noon. At 2:00 P.M., all subjects were given the alertness test. Group A had a low-fat lunch with no red meat, lots of vegetables, carbohydrates, and fiber. Group B had a high-fat lunch with red meat, vegetable oils, and low fiber. The only drink for both groups was water. The test scores are shown below. Group A 75 82 96 54 78 59 67 53 97 85 66 Group B 70 80 79 60 62 71 52 69 64 88 51 74 Use a 10% level of significance to test the claim that there is no difference in mental alertness distributions based on type of lunch. (a) What is the level of significance?State the null and alternate hypotheses. Ho: Distributions are different. H1: Distributions are the same.Ho: Distributions are the same. H1:…To study the effectiveness of possible treatments for insomnia, a sleep researcher conducted a study in which four participants were instructed to count sheep (the Sheep Condition), four were told to concentrate on their breathing (the Breathing Condition), and four were not given any special instructions. The average number of minutes taken for each participant to fall asleep over the next seven days were 14, 28, 27, and 31 minutes for the Sheep condition; 25, 22, 17, and 14 minutes for those in the Breathing condition; and 45, 33, 30, and 41 for the Control condition. Using the .05 significance level, did the different techniques have different effects? What is the null hypothesis? 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