In a poll of 555 randomly selected students, 40% stated that they enjoyed statistics. Answer the...
In a poll of 555 randomly selected students, 40% stated that they enjoyed statistics. Answer the following questions:
a. Identify the number of students who say that they enjoy statistics? Round to the nearest whole student if necessary.
b. Construct a 95% confidence interval estimate of the percentage of all students who say that they enjoy statistics.
c. Can we safely conclude that the majority of students enjoy statistics? Explain.
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In a poll of 555 randomly selected students, 40% stated that
they enjoyed statistics. Answer the...
11: In a Gallup poll of 1000 randomly selected adults, 347 of them said they were...
11: In a Gallup poll of 1000 randomly selected adults, 347 of them said they were underpaid. Construct a 95% confidence interval estimate of the percentage (proportion) of all adults who say that they are underpaid. Round to the nearest hundredth. 12: If you are using a ? −test when testing a claim about a population mean and the sample size is 53, the number of degrees of freedom is ________.
2 Iha Gallup poll of 557 randomly selected adults, 284 said that they were underpaid. a...
2 Iha Gallup poll of 557 randomly selected adults, 284 said that they were underpaid. a struct a 95% confidence interval estimate the percentage of all adults who say that hey are underpaid. (20 points)
2) A New York Times poll on women's issues interviewed 1025 women randomly selected from the...
2) A New York Times poll on women's issues interviewed 1025 women randomly selected from the United States, excluding Alaska and Hawaii. The poll found that 47% of the women said they do not get enough time for themselves (a) The poll announced a margin of error of 3 percentage points for 95% confidence in its conclusions. What is the 95% confidence interval for the percent of all adult women who think they do not get enough time for themselves?...
According to a poll, 704 out of 1068 randomly selected smokers polled believed they are discriminated...
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14. Randomly selected students participated in an experiment to test their ability to determine when one minute (or sixty seconds) has passed. Forty students yielded a sample mean of 61.8 seconds. Assuming that σ=9.2 seconds, construct and interpret a 95% confidence interval estimate of the population mean of all students. What is the 95% confidence interval for the population mean μ? ____<μ<____ (Type integers or decimals rounded to one decimal place as needed.) 15. Salaries of 43 college graduates who...
In a study conducted in March 2020, 144 of 200 randomly selected students said that Liverpool...
In a study conducted in March 2020, 144 of 200 randomly selected students said that Liverpool football team were their favourite team. (a) Construct a 98% confidence interval to estimate the true proportion of students who said that Liverpool football team were their favourite team. (b) How large a sample would be necessary to estimate the true proportion of with a margin of error of 5%, with 95% confidence?
In a Gallup poll, 1025 randomly selected adults were surveyed and 298 of them said that...
In a Gallup poll, 1025 randomly selected adults were surveyed and 298 of them said that they used the internet for shopping at least a few times a year. a) Find the point estimate of the percentage of adults who use the internet for shopping. b) Find a 99% confidence interval estimate of the percentage of adults who use the internet for shopping.
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6. [20 Points in a poll, 202 of 1010 randomly selected adults aged 18 or older...
6. [20 Points in a poll, 202 of 1010 randomly selected adults aged 18 or older stated that they believe there is too little spending on national defense. Use this information to complete parts(a) through (c) below a. Obtain a point estimate for the proportion of adults aged 18 or older who feel there is too little spending on national defense Construct a 9% confidence interval for the proportion of adults aged 18 or older who believe there is too...
You conduct a poll of 500 randomly selected city residents, asking them if they own an...
You conduct a poll of 500 randomly selected city residents, asking them if they own an automobile, 280 say they do own an automobile. Construct a 94% confidence interval for the population proportion of city residents who own an automobile. Options- 5 to 6 .519 to .603 .518 to .602
2 Iha Gallup poll of 557 randomly selected adults, 284 said that they were underpaid. a struct a 95% confidence interval estimate the percentage of all adults who say that hey are underpaid. (20 points)
2) A New York Times poll on women's issues interviewed 1025 women randomly selected from the United States, excluding Alaska and Hawaii. The poll found that 47% of the women said they do not get enough time for themselves (a) The poll announced a margin of error of 3 percentage points for 95% confidence in its conclusions. What is the 95% confidence interval for the percent of all adult women who think they do not get enough time for themselves?...
6. [20 Points) In a poll, 202 of 1010 randomly selected adults aged 18 or older stated that they believe there is too little spending on national defense. Use this information to complete parts (a) through (c) below 2. Obtain a point estimate for the proportion of adults aged 18 or older who feel there is too little spending on national defense. b. Construct a 90% confidence interval for the proportion of adults aged 18 or older who believe there...
6. [20 Points in a poll, 202 of 1010 randomly selected adults aged 18 or older stated that they believe there is too little spending on national defense. Use this information to complete parts(a) through (c) below a. Obtain a point estimate for the proportion of adults aged 18 or older who feel there is too little spending on national defense Construct a 9% confidence interval for the proportion of adults aged 18 or older who believe there is too...
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