A study conducted by the Pew Research Center reported that 58% of cell phone owners used...

A study conducted by the Pew Research Center reported that 58% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied. Would it be unusual if more than 12 of them had used their phones for guidance on purchasing decisions?

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orchestra answered 1 year ago

A study conducted by the PEW Research Center reported that 62% of cell phone owners used...

A study conducted by the PEW Research Center reported that 62% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A random sample of 13 cell phone owners is studied to understand how cell phones are used to make purchasing decisions. Write all answers as a decimal rounded to the fourth. a) Interpret the mean using the word expect. b) Find the standard deviation c) Find the probability of exactly 7 using their phones...

A study conducted by a research group in a recent year reported that 58% of cell...

A study conducted by a research group in a recent year reported that 58% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 16 cell phone owners is studied. Round the answers to at least four decimal places. A) What is the probability that seven or more of them used their phones for guidance on purchasing decisions? The probability that seven or more of them used their phones for guidance on...

5. According to a Pew Research Center nationwide telephone survey of American adults conducted by phone...

5. According to a Pew Research Center nationwide telephone survey of American adults conducted by phone between March 15 and April 24, 2011, 75% of adults said that college education has become too expensive for most people and they cannot afford it (Time, May 30, 2011). Suppose that this result is true for the 2011 population of American adults. In a recent poll of 1600 American adults, 1160 said that college education has become too expensive for most people and...

A 2018 Pew Research poll found that 78% of smart phone owners use their phone for...

A 2018 Pew Research poll found that 78% of smart phone owners use their phone for online shopping. You take a random sample now of 150 current smart phone owners and find that 133 of them use their phone for shopping. Is this evidence that since 2018 there has been an increase in the proportion of smart phone owners who use their devices for shopping? Justify your conclusion at  a= 0.01. (a) What test should you conduct here? (b)...

How did you use your cell phone? A Pew Internet poll asked cell phone owners about...

How did you use your cell phone? A Pew Internet poll asked cell phone owners about how they used their cell phones. One question asked whether or not during the past 30 days they had used their phone while in a store to call a friend or family member for advice about a purchase they were considering. The poll surveyed 1003 adults living in the United States by telephone. Of these, 462 responded that they had used thier cell phone...

In a recent survey conducted by the Pew Research Center, a random sample of adults 18...

In a recent survey conducted by the Pew Research Center, a random sample of adults 18 years of age or older living in the continental united states was asked their reaction to the word socialism. In addition, the individuals were asked to disclose which political party they most associate with. Results of the survey are given in the table. Democrat Independent Republican Positive 220 144 62 Negative 279 410 351 a) Explain why this data should be analyzed by the...

Gender and Frequency of Status Updates on Facebook The Pew Research Center conducted a survey of...

Gender and Frequency of Status Updates on Facebook The Pew Research Center conducted a survey of randomly sampled American adults, asking them about their use of social networking sites such as Facebook.1 The table below shows the self-reported frequency of status updates on Facebook by gender. Are frequency of status updates and gender related? ↓Status/Gender → Male Female Total Every day 42 88 130 3-5 days/week 46 59 105 1-2 days/week 70 79 149 Every few weeks 77 79 156...

Invest in science ~ The Pew Research Center conducted a survey of U.S. adults in 2019...

Invest in science ~ The Pew Research Center conducted a survey of U.S. adults in 2019 to determine how American citizens feel about whether federal government should increase spending for scientific research. In the study, there were 712 Democrats and 652 Republicans. According to the survey, 438 Democrats and 270 Republicans said they are in favor of increased spending for scientific research. We want to estimate the actual difference between the proportions of Democrats and Republicans who favor increased spending...

The Pew Research Center recently conducted a survey of 1007 U.S. adults and found that 85%...

The Pew Research Center recently conducted a survey of 1007 U.S. adults and found that 85% of those surveyed know what Twitter is. Using the survey results construct a 95% confidence interval estimate of the percentage of all adults who know what Twitter is. Round the percentages to the first decimal place. (c) Explain why it would or would not be okay for a newspaper to make this statement: “Based on results from a recent survey, more than 3 out...

The Pew Research Center conducted the Global Attitudes Survey in spring 2017 in multiple countries. In...

The Pew Research Center conducted the Global Attitudes Survey in spring 2017 in multiple countries. In Canada, a random sample of 1,022 adults were surveyed.2 In Russia, a random sample of 1,002 adults were surveyed.3 One question asked was “How closely do you follow news specifically about the United States?”4 The proportion of Canadian adults who said they follow US news closely was 0.78 while the proportion of Russian adults who said they follow US news closely was 0.48. The...

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