Question
In: Statistics and Probability
Two computer users were discussing tablet computers. A higher proportion of people ages 16 to 29...
Two computer users were discussing tablet computers. A higher proportion of people ages 16 to 29 use tablets than the proportion of people age 30 and older. The table below details the number of tablet owners for each age group. Test at the 1% level of significance. (For subscripts let 1 = 16-29 year old users, and 2 = 30 years old and older users.)
| 16–29 year olds | 30 years old and older | |
|---|---|---|
| Own a Tablet | 69 | 231 |
| Sample Size | 620 | 2,302 |
State the null and alternative hypothesis:
In words, state what your random variable P'1 − P'2 represents:
State the distribution to use for the test. (Round your answers to four decimal places.)
What is the test statistic?
What is the p-value? what does it mean
Sketch a picture of this situation
Indicate the correct decision
Explain how you determined which distribution to use.
Solutions
orchestra answered 2 years agoRelated Solutions
Two computer users were discussing tablet computers. A higher proportion of people ages 16 to 29...
Two computer users were discussing tablet computers. A higher
proportion of people ages 16 to 29 use tablets than the proportion
of people age 30 and older. The table below details the number of
tablet owners for each age group. Test at the 1% level of
significance. (For subscripts let 1 = 16-29 year old users, and 2 =
30 years old and older users.)
16–29 year
olds
30 years old and
older
Own a Tablet
69
231
Sample Size...
Two computer users were discussing tablet computers. A higher proportion of people ages 16 to 29...
Two computer users were discussing tablet computers. A higher
proportion of people ages 16 to 29 use tablets than the proportion
of people age 30 and older. The table below details the number of
tablet owners for each age group. Test at the 1% level of
significance. (For subscripts let 1 = 16-29 year old users, and 2 =
30 years old and older users.)
16–29 year
olds
30 years old and
older
Own a
Tablet
69
231
Sample
Size...
16) Two computer users were discussing tablet computers. A higher proportion of people ages 16 to...
16) Two computer users were discussing tablet computers.
A higher proportion of people ages 16 to 29 use tablets than the
proportion of people age 30 and older. The table below details the
number of tablet owners for each age group. Test at the 1% level of
significance. (For subscripts let 1 = 16-29 year old users, and 2 =
30 years old and older users.)
16–29 year olds
30 years old and older
Own a Tablet
69
231
Sample...
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a
random sample of n1= 156 people ages 16 to 19 were taken from the
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Suppose that in the certain country the proportion of people with red hair is 29%. Find...
Suppose that in the certain country the proportion of people
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are randomly selected from the populattion of this country. Round
all probabilities to four decimals.
(a) The probability that exactly 6 of the people have red
hair
(b) The probability that at least 6 of the people have red
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A computer manufacturer produces three types of computers: laptop, desktop, and tablet The manufacturer has designed...
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Random samples of people ages 15−24 and of people ages 25−34 were asked about their preferred...
Random samples of people ages 15−24 and of people ages 25−34
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methods from the following list: cell phone, instant message,
e-mail, other.
Preferred
Communication Method
Age
Cell
Phone
Instant
Message
Email
Other
Row
Total
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3
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100
25-34
43
28
16
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About 90% of young adult Internet users (ages 18 to 29) use social-networking sites. (a) Suppose...
About 90% of young adult Internet users (ages 18 to 29) use
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(a) Suppose a sample survey contacts an SRS of 1400 young adult
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who use social-networking sites.
What is the approximate distribution of pˆp^?
μpˆμp^ (±±0.00001) = , σpˆσp^ (±±0.00001) =
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(Use software.)
P(0.87<pˆ<0.93)P(0.87<p^<0.93) (±±0.0001) =...
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