Question

A random sample of 380 married couples found that 280 had two or
more personality preferences in common. In another random sample of
578 married couples, it was found that only 24 had no preferences
in common. Let *p*_{1} be the population proportion
of all married couples who have two or more personality preferences
in common. Let *p*_{2} be the population proportion
of all married couples who have no personality preferences in
common.

(a) Find a 90% confidence interval for *p*_{1} –
*p*_{2}. (Use 3 decimal places.)

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Answer #1

A random sample of 380 married couples found that 280 had two or
more personality preferences in common. In another random sample of
578 married couples, it was found that only 24 had no preferences
in common. Let p1 be the population proportion
of all married couples who have two or more personality preferences
in common. Let p2 be the population proportion
of all married couples who have no personality preferences in
common.
(a) Find a 90% confidence interval for...

A random sample of 364 married couples found that 280 had two or
more personality preferences in common. In another random sample of
570 married couples, it was found that only 40 had no preferences
in common. Let p1 be the population proportion of all married
couples who have two or more personality preferences in common. Let
p2 be the population proportion of all married couples who have no
personality preferences in common. (a) Find a 99% confidence
interval for...

A random sample of 390 married couples found that 298 had two or
more personality preferences in common. In another random sample of
582 married couples, it was found that only 28 had no preferences
in common. Let p1 be the population proportion
of all married couples who have two or more personality preferences
in common. Let p2 be the population proportion
of all married couples who have no personality preferences in
common.
(a) Find a 95% confidence interval for...

A random sample of 368 married couples found that 288 had two or
more personality preferences in common. In another random sample of
572 married couples, it was found that only 40 had no preferences
in common. Let p1 be the population proportion
of all married couples who have two or more personality preferences
in common. Let p2 be the population proportion
of all married couples who have no personality preferences in
common.
(a) Find a 90% confidence interval for...

Most married couples have two or three personality preferences
in common. A random sample of 362 married couples found that 140
had three preferences in common. Another random sample of
564couples showed that 220 had two personality preferences in
common. Let p1 be the population proportion of
all married couples who have three personality preferences in
common. Let p2 be the population proportion of
all married couples who have two personality preferences in
common.
(a) Find a 95% confidence interval...

Q1: A random sample of 390 married couples found that 290 had
two or more personality preferences in common. In another random
sample of 570 married couples, it was found that only 36 had no
preferences in common. Let p1 be the population
proportion of all married couples who have two or more personality
preferences in common. Let p2 be the population
proportion of all married couples who have no personality
preferences in common.
(a) Find a 95% confidence interval...

Isabel Briggs Myers was a pioneer in the study of personality
types. The personality types are broadly defined according to four
main preferences. Do married couples choose similar or different
personality types in their mates? The following data give an
indication.
Similarities and Differences in a Random
Sample of 375 Married Couples
Number of Similar
Preferences
Number of Married
Couples
All four
Three
Two
One
None
35
126
125
70
19
Suppose that a married couple is selected at random....

Isabel Briggs Myers was a pioneer in the study of personality
types. The personality types are broadly defined according to four
main preferences. Do married couples choose similar or different
personality types in their mates? The following data give an
indication.
Similarities and Differences in a Random Sample of
375 Married Couples
Number of Similar
Preferences
Number of Married Couples
All four
25
Three
132
Two
118
One
64
None
36
Suppose that a married couple is selected at random....

Isabel Briggs Myers was a pioneer in the study of personality
types. The personality types are broadly defined according to four
main preferences. Do married couples choose similar or different
personality types in their mates? The following data give an
indication.
Similarities and Differences in a Random Sample of
375 Married Couples
Number of Similar
Preferences
Number of Married Couples
All four
31
Three
128
Two
120
One
61
None
35
Suppose that a married couple is selected at random....

Isabel Briggs Myers was a pioneer in the study of personality
types. The personality types are broadly defined according to four
main preferences. Do married couples choose similar or different
personality types in their mates? The following data give an
indication.
Similarities and Differences in a Random Sample of
375 Married Couples
Number of Similar
Preferences
Number of Married Couples
All four
26
Three
133
Two
122
One
67
None
27
Suppose that a married couple is selected at random....

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