Calculus and Above

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The concerns about the impact of technology on our lives are
The concerns about the impact of technology on our lives are growing. There have been recent research reports about the negative impact of digital technology usage on​ stress, work​ productivity, happ… read more
Scott
Master's Degree
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Generation Y has been defined as those individuals who were
Generation Y has been defined as those individuals who were born between 1981 and 1991. A 2010 survey by a credit counseling foundation found that 56​% of the young adults in Generation Y pay their mo… read more
Scott
Master's Degree
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According to a recent​ survey, 77​% of teens ages​ 12-17 in
According to a recent​ survey, 77​% of teens ages​ 12-17 in a certain country used social networks in 2009. A random sample of 120 teenagers from this age group was selected. Complete parts a through … read more
Scott
Master's Degree
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1. A sample of 125 is drawn from a population with a
1. A sample of 125 is drawn from a population with a proportion equal to 0.58. Complete parts ​a) through ​c) below. Click here to view page 1 of the cumulative standardized normal distribution table.… read more
Scott
Master's Degree
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1. Consider a population of 200 with a mean of 50 and a
1. Consider a population of 200 with a mean of 50 and a standard deviation equal to 29. What is the probability of obtaining a sample mean of 52 or less from a sample of 40​? Click here to view page 1… read more
Scott
Master's Degree
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This one is 4 question first question A recent survey by the
hello this one is 4 questionfirst question A recent survey by the research institute showed that 65​% of users of online dating sites say the number one thing​ they're looking for in a date or partner… read more
Neo
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According to a research​ group, 23​% of people who use
According to a research​ group, 23​% of people who use online dating services are 35 to 44 years old. There is also information that this percentage has steadily increased over the previous years. Ass… read more
Scott
Master's Degree
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The following data show the costs charged by a tax
The following data show the costs charged by a tax preparation service for a random sample of 15 tax returns. Complete parts a through c. ​\$130 ​\$105 ​\$135 ​\$200 ​\$95 ​\$115 ​\$90 ​\$200 ​\$135 ​\$80 ​\$155… read more
Scott
Master's Degree
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Obtaining a​ driver's license at the earliest eligible age
Obtaining a​ driver's license at the earliest eligible age has been a teenage ritual that appears to be fading. A study performed by a​ university's transportation research institute recently found th… read more
Neo
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In 2016 Americans owed​ \$1.3 trillion in student loans. The
In 2016 Americans owed​ \$1.3 trillion in student loans. The default rates of college student loans determine eligibility for colleges to receive federal student aid. According to the Department of​ Ed… read more
Scott
Master's Degree
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According to​ eMarketer.com, 36​% of mobile phone users in
According to​ eMarketer.com, 36​% of mobile phone users in the United States use the Snapchat app at least once a month​ (data collected for a particular​ month). A sample of 125 was selected. Complet… read more
Tom
Master's Degree
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At a certain​ college, 54​% of employees carry dependent
At a certain​ college, 54​% of employees carry dependent family members on their health insurance plans.​ Currently, there are 200 employees working for the college. A random sample of 50 employees is… read more
Scott
Master's Degree
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Much of a yearly basketball tournament takes place during
Much of a yearly basketball tournament takes place during the workweek. According to a​ survey, 40​% of employed adults who plan to watch at least one tournament game say that they have watched the ye… read more
Scott
Master's Degree
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A process produces strings of Christmas tree lights that
A process produces strings of Christmas tree lights that historically have experienced a defective rate of 6​%. A customer has placed an order for 170 strings of lights. Use the normal approximation t… read more
DebdattaBhattacharya
Doctoral Degree
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Much of a yearly basketball tournament takes place during
Much of a yearly basketball tournament takes place during the workweek. According to a​ survey, 40​% of employed adults who plan to watch at least one tournament game say that they have watched the ye… read more
Scott
Master's Degree
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Suppose a large shipment of microwave ovens contained 14%
Suppose a large shipment of microwave ovens contained 14% defectives. If a sample of size 207 is selected, what is the probability that the sample proportion will differ from the population proportion… read more
Kofi
PhD in Statistics
Ph.D.
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According to a survey in a​ country, 38​% of adults do not
According to a survey in a​ country, 38​% of adults do not own a credit card. Suppose a simple random sample of 600 adults is obtained. Complete parts​ (a) through​ (d) below. ​(a) Describe the sampli… read more
Ann
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MSC Mathematics
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Suppose that the lifetimes of light bulbs are approximately
Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56 hours and a standard deviation of 3.3 hours. With this​ information, answer the following questions… read more
Kofi
PhD in Statistics
Ph.D.
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