Mathematics, 05.05.2020 02:51 ineedhelp2322
The National Sleep Foundation sponsors an annual poll. In a March 2011 press release, they stated "... 63% of Americans say their sleep needs are not being met during the week." The following is an excerpt from the Poll Methodology and Definitions section of the article. "The 2011 Sleep in America® annual poll was conducted for the National Sleep Foundation by WB&A Market Research, using a random sample of 1,508 adults between the ages of 13-64. The margin of error is 2.5 percentage points at the 95% confidence level." Which of the following statements is correct?
a. We are confident that 95% of the 1,508 adults in the sample say their sleep needs are not being met during the week.
b. We are 95% confident that between 60.5% and 655% of Americans say their sleep needs are not being met during the week
c. We are 95% confident that 63% of Americans say their sleep needs are not being met during the week
d. We are 95% confident that between 63% and 655% of Americans say their sleep needs are not being met during the week
Answers: 3
Mathematics, 21.06.2019 16:30, lilrel8602
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Mathematics, 21.06.2019 19:00, milhai0627a
Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).
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Mathematics, 21.06.2019 19:30, Flaka2809
Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours
Answers: 1
The National Sleep Foundation sponsors an annual poll. In a March 2011 press release, they stated "....
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