A friend is tested to see whether they can tell the difference between bottled water and...
A friend is tested to see whether they can tell the difference between bottled water and tap water. There are 30 trials (half with bottled water and half with tap water), and your friend gets 18 correct.
The null hypothesis is H0: ___________
The alternative hypothesis is HA: __________
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A friend is tested to see whether they can tell the difference
between bottled water and...
Is there any difference nutritionally between tap water and bottled water?For bottled water, what is the...
Is there any difference nutritionally between tap water and bottled water?For bottled water, what is the difference purified Vs. Spring water?
Students at Hope College were tested to see if they could determine the difference between tap...
Students at Hope College were tested to see if they could determine the difference between tap water and bottled water. Of the 63 students tested, 42 correctly identified which was which. We will assume the students tested are representative of all students at Hope College. Using the 2SD rule, we find that the 95% confidence interval is (0.541,0.793), and that the theory-based 95% confidence interval is (0.5503, 0.7831). Why are the 95% confidence intervals similar for the two methods? The...
Students at Hope College were tested to see if they could determine the difference between tap...
Students at Hope College were tested to see if they could determine the difference between tap water and bottled water. Of the 63 students tested, 42 correctly identified which was which. We will assume the students tested are representative of all students at Hope College. Using the 2SD rule, we find that the 95% confidence interval is (0.541, 0.793), and that the theory-based 95% confidence interval is (0.5503, 0.7831). Why are the 95% confidence intervals similar for the two methods?...
A bottled water distributor wants to determine whether the mean amount of water contained in 1-gallon...
A bottled water distributor wants to determine whether the mean amount of water contained in 1-gallon bottles purchased from a nationally known water bottling company is actually 1 gallon. You know from the water bottling company specifications that the standard deviation of the amount of water is 0.02 gallon. You select a random sample of 45 bottles, and the mean amount of water per 1-gallon bottle is 0.994 gallon. a. Is there evidence that the mean amount is different from...
Jovelin conducted an experiment wherein she tested to see whether a sign written in red versus...
Jovelin conducted an experiment wherein she tested to see whether a sign written in red versus green ink would affect how people remember the message. She found no significant difference in her participants’ memory scores. In Jovelin’s write-up of the results, she would state that she: A. rejected the null hypothesis B. proved an alternative hypothesis C. failed to reject the null hypothesis D. found an alpha (probability) more than .05
What are the RDAs for water?Can you get this water from sources other than just drinking...
What are the RDAs for water?Can you get this water from sources other than just drinking water? Instead of actively tracking your water servings,list at least two ways your boby might indicate to you are properly hydrated. What government boby regulates the quality of tap water?Is this game agency that regulates bottled water?Why does this matter. Is there any difference nutritionally between tap water and bottled water?For bottled water,what is the difference between purified vs spring water? Discuss some of...
A client wants to determine whether there is a significant difference in the time required to...
A client wants to determine whether there is a significant difference in the time required to complete a program evaluation with the three different methods that are in common use. Suppose the times (in hours) required for each of 18 evaluators to conduct a program evaluation follow. Method 1 Method 2 Method 3 69 63 59 72 71 65 66 76 67 78 69 55 75 73 57 73 70 63 Use α = 0.05 and test to see whether...
Can you do both please and help a girl out XOXO :)options are if the p-value...
Can you do both please and help a girl out XOXO :)options are if the p-value is
either greater or less than 0.01.
Researchers conducted a follow-up study predicting the outcomes of races in the House of Representatives with 189 correct predictions out of 279. Using a simulation and the 25D method, the 95% confidence interval is (0.62, 0.74) and using a theory-based approach, the 95% confidence interval for these data is (0.62,0.73). When comparing the 25D method and theory...
A client wants to determine whether there is a significant difference in the time required to...
A client wants to determine whether there is a significant difference in the time required to complete a program evaluation with the three different methods that are in common use. Suppose the times (in hours) required for each of 18 evaluators to conduct a program evaluation follow. Method 1 Method 2 Method 3 66 62 56 71 74 69 67 77 68 75 66 59 79 72 58 72 70 62 Use α = 0.05 and test to see whether...
A group of researchers tested whether snakes tend to choose a warm resting site when both...
A group of researchers tested whether snakes tend to choose a warm resting site when both a warm site and a cool site are presented to them. Their hypotheses were: H0 = Snakes do not prefer the warmer site. And HA = Snakes prefer the warmer site. They carried out the experiment, and with their data calculated a one-tailed P-value of P = 0.03. If they were using an α value of 0.05, and instead used a two-tailed test, they...
Students at Hope College were tested to see if they could determine the difference between tap water and bottled water. Of the 63 students tested, 42 correctly identified which was which. We will assume the students tested are representative of all students at Hope College. Using the 2SD rule, we find that the 95% confidence interval is (0.541,0.793), and that the theory-based 95% confidence interval is (0.5503, 0.7831). Why are the 95% confidence intervals similar for the two methods? The...
Can you do both please and help a girl out XOXO :)options are if the p-value is
either greater or less than 0.01.
Researchers conducted a follow-up study predicting the outcomes of races in the House of Representatives with 189 correct predictions out of 279. Using a simulation and the 25D method, the 95% confidence interval is (0.62, 0.74) and using a theory-based approach, the 95% confidence interval for these data is (0.62,0.73). When comparing the 25D method and theory...
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