A survey asked families in New York about how many children they have. Of 558 New...

A survey asked families in New York about how many children they have. Of 558 New Yorkers surveyed 123 had one child while 186 out of 614 had two children. At the 0.10 significance level, test the claim that there are fewer families with one child than with two children. Show all 5 steps. Interprer your solution.

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orchestra answered 2 years ago

A survey was conducted in which 125 families were asked how many cats lived in their...

A survey was conducted in which 125 families were asked how many cats lived in their households. The results are shown below. a) What is the probability that a randomly selected family has one cat? b) What is the probability that a randomly selected family has more than one cat? c) What is the probability that a randomly selected family has cats? d) Is this an example of classical, empirical, or subjective probability? *Number of Cats-Number of Households* 0-71 1-33...

A survey asked a group of medical doctors how many children they had fathered. The results...

A survey asked a group of medical doctors how many children they had fathered. The results are summarized by this ungrouped frequency distribution. Number of Children 0 1 2 3 4 6 Number of Doctors 19 25 12 18 6 5 (a) Calculate the sample mean for the number of children the doctors had fathered. (Give your answer correct to two decimal places.) (b) Calculate the variance for the number of children the doctors had fathered. (c) Calculate the standard...

A survey asked parents of children aged ten and under how many birthday parties they attended...

A survey asked parents of children aged ten and under how many birthday parties they attended last year. Let X represent the number of birthday parties. The probability distribution is given below. Find the mean and the standard deviation of the probability distribution using Excel. Round the mean and standard deviation to three decimal places. x P(x) 1 0.0303 2 0.0639 3 0.0197 4 0.003 5 0.0164 6 0.0454 7 0.0981 8 0.0648 9 0.0657 10 0.0124 11 0.0118 12...

A survey asked subjects how many friends they have and whether this number is associated with...

A survey asked subjects how many friends they have and whether this number is associated with their astrological sign (the 12 symbols of the Zodiac). To compare the reported number of good friends for those who are (married, widowed, divorced, separated, never married), an ANOVA table reports F = 0.80. (a) Specify the null and alternative hypotheses for the ANOVA. (b) Based on what you know about the F distribution; would you guess that F = 0.80 provides strong evidence...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1247...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1247 males surveyed, 197 responded that they had at least one tattoo. Of the 1025 females surveyed, 138 responded that they had at least one tattoo. Construct a 99% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let p1 represent the proportion...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1229...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1229 males surveyed,185 responded that they had at least one tattoo. Of the 1030 females surveyed,138 responded that they had at least one tattoo. Construct a 95% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let p 1 represent the proportion of...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1232...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1232 males surveyed,190 responded that they had at least one tattoo. Of the1059 females surveyed,127 responded that they had at least one tattoo. Construct a 99% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let p 1p1 represent the proportion of males...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1209...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1209 males surveyed, 183 responded that they had at least one tattoo. Of the 1089 females surveyed, 133 responded that they had at least one tattoo. Construct a 99% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let p 1 represent the...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1207...

A survey asked, "How many tattoos do you currently have on your body?" Of the 1207 males surveyed, 197 responded that they had at least one tattoo. Of the 1028 females surveyed, 135 responded that they had at least one tattoo. Construct a 90 % confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. Let p 1 represent...

A recent survey asked 64 CMU students, “In the past year, about how many books did...

A recent survey asked 64 CMU students, “In the past year, about how many books did your read?” The results indicated a mean of 16.8 books with a S.D. of 6,7 books. a. What is the Standard Error of the estimate of the population mean? b. What is the Margin of Error at a C.L. of 97%? c. What is the right boundary of the C.I. at a C.L. of 97%? d. At a 99% C.L., if the researcher wants...

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