the population proportion of people who eat Mcdonalds 3 times per week is 0.15, 180 adults...
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population proportion of people who eat Mcdonalds 3 times per week
is 0.15, 180 adults...
A researcher wishes to estimate with 99% confidence, the population proportion of adults who eat fast...
A researcher wishes to estimate with 99% confidence, the population proportion of adults who eat fast food four to six times per week.Her estimate must be accurate within 5% of the population proportion. a) no preliminary estimate is avaiable, find the minimum sample size needed. b) find the minimium sample size needed, using a prior study that found that 38% of the respondents said they eat fast food four to six times per week c) compare the results from parts...
I will be calculating the population mean number of times adults eat during the day. I...
I will be calculating the population mean number of times adults eat during the day. I asked 10 adults at work to see how many times a day they normally eat. The responses were (2,3,3,2,3,3,4,5,3,3). Please calculate a 80% confidence interval for the number of meals eaten a day by adults.
The claim is that the proportion of adults who smoked a cigarette in the past week...
The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25, and the sample statistics include n=1774 subjects with 426 saying that they smoked a cigarette in the past week. Find the value of the test statistic.
Suppose across all cities in Florida, the proportion of people young adults (ages 20 to 30)...
Suppose across all cities in Florida, the proportion of people young adults (ages 20 to 30) who have attended a roller derby match is 0.28. Tyree believes that the proportion of young adults in his city who have attended a roller derby match is greater than the state population proportion. He decides to test this idea using a one-sample z-test for a population proportion using a significance level of α-0. 1 0 He conducts a survey of 225 randomly selected...
#9 9) A survey asked 915 people how many times per week they dine out at...
#9
9) A survey asked 915 people how many times per week they dine out at a restaurant. Th results are presented in the following table. Number of Times Frequency 134 273 249 127 72 30 24 Total915 Consider the 915 people to be a population. Let X be the number of times per week a person dines out for a person sampled at random from this population. Compute the standard deviation A) 2.1 в) 1.5 C 1.9 D) 2.2...
(3) A survey is done to estimate the proportion of U.S. adults who think that texting...
(3) A survey is done to estimate the proportion of U.S. adults who think that texting while walking across an intersection in the crosswalk should be illegal (or at least punishable via fines). In the survey, 73% of 1025 randomly sampled U.S. adults said that this should be illegal. Prior survey results indicated that the percent of people against texting and walking through intersections was around 60%. (a) In performing one-sample hypothesis tests, would we use z or t in...
I believe the population mean number of times people go to the park each is less...
I believe the population mean number of times people go to the park each is less than 3. I talked to 7 people and they went 2,0,1,5,3, and 2 times last week. How do I test this hypothesis at .05 significance level assuming a random sample?
An economist claims that the proportion of people who plan to purchase a fully electric vehicle...
An economist claims that the proportion of people who plan to purchase a fully electric vehicle as their next car is greater than 65%. To test this claim, a random sample of 750 people are asked if they plan to purchase a fully electric vehicle as their next car Of these 750 people, 513 indicate that they do plan to purchase an electric vehicle. The following is the setup for this hypothesis test: H0:p=0.65 Ha:p>0.65 In this example, the p-value...
1. Twenty-five student were asked the question "How many times per week do you eat chips?...
1. Twenty-five student were asked the question "How many times per week do you eat chips? The following results were found: # of Times 0 8 4 Construct a Probability Distribution for the random variable x, where x is the number of times per week a student eats chips. A) B) Find the probability someone eats chips at most 2 times per week. C) Find the probability someone eats chips more than 3 times per week. D) Find the probability...
I want to estimate the population mean number of times that adults go to the movie...
I want to estimate the population mean number of times that adults go to the movie each week. I spoke with seven people I know and found that they went out 2, 0, 1, 5, 0, 2, and 3 times last week. I want to calculate an 80% confidence interval for the population mean. Assume a random sample was chosen, which is required to determine a confidence interval.
Suppose across all cities in Florida, the proportion of people young adults (ages 20 to 30) who have attended a roller derby match is 0.28. Tyree believes that the proportion of young adults in his city who have attended a roller derby match is greater than the state population proportion. He decides to test this idea using a one-sample z-test for a population proportion using a significance level of α-0. 1 0 He conducts a survey of 225 randomly selected...
#9
9) A survey asked 915 people how many times per week they dine out at a restaurant. Th results are presented in the following table. Number of Times Frequency 134 273 249 127 72 30 24 Total915 Consider the 915 people to be a population. Let X be the number of times per week a person dines out for a person sampled at random from this population. Compute the standard deviation A) 2.1 в) 1.5 C 1.9 D) 2.2...
(3) A survey is done to estimate the proportion of U.S. adults who think that texting while walking across an intersection in the crosswalk should be illegal (or at least punishable via fines). In the survey, 73% of 1025 randomly sampled U.S. adults said that this should be illegal. Prior survey results indicated that the percent of people against texting and walking through intersections was around 60%. (a) In performing one-sample hypothesis tests, would we use z or t in...
1. Twenty-five student were asked the question "How many times per week do you eat chips? The following results were found: # of Times 0 8 4 Construct a Probability Distribution for the random variable x, where x is the number of times per week a student eats chips. A) B) Find the probability someone eats chips at most 2 times per week. C) Find the probability someone eats chips more than 3 times per week. D) Find the probability...
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