Among drivers who have had a car crash in the last year, 160160 were randomly selected...

Among drivers who have had a car crash in the last year, 160160 were randomly selected and categorized by age. The results are listed in the table below.

Age	Under 25	25-44	45-64	Over 64
Drivers	62	42	21	35

If all age groups have the same crash rate, we would expect (due to the age distribution of licensed drivers) the given age groups to have 16%, 44% ,27%, and 13%1of the crashes, respectively. At the 0.025 significance level, test the claim that the age distribution of crashes conforms to the age distribution of licensed drivers.

(a) Find the rejection region.
Reject H0 if χ2>

(b) Find the test statistic. (Round your final answer to 2 decimal places.)
χ2 =

(c) Do these data provide significant evidence that the age distribution of crashes does not conform to the age distribution of licensed drivers? (Type: Yes or No )

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Among drivers who have had a car crash in the last year, 170 were randomly selected...

Among drivers who have had a car crash in the last year, 170 were randomly selected and categorized by age, with the results listed in the table below. Age Under 25 25-44 45-64 Over 64 Drivers 70 41 22 37 If all ages have the same crash rate, we would expect (because of the age distribution of licensed drivers) the given categories to have 16%, 44%, 27%, 13% of the subjects, respectively. At the 0.025 significance level, test the claim...

Among drivers who have had a car crash in the last year, 130 were randomly selected...

Among drivers who have had a car crash in the last year, 130 were randomly selected and categorized by age, with the results listed in the table below. Age Under 25 25-44 45-64 Over 64 Drivers Age Under 25 25-44 45-64 Over 64 Drivers 52 31 17 30 If all ages have the same crash rate, we would expect (because of the age distribution of licensed drivers) the given categories to have 16%, 44%, 27%, 13% of the subjects, respectively....

) Among drivers who have had a car crash in the last year, 170 were randomly...

) Among drivers who have had a car crash in the last year, 170 were randomly selected and categorized by age, with the results listed in the table below. Age Under 25 25-44 45-64 Over 64 Drivers 70 41 22 37 If all ages have the same crash rate, we would expect (because of the age distribution of licensed drivers) the given categories to have 16%, 44%, 27%, 13% of the subjects, respectively. At the 0.025 significance level, test the...

) Among drivers who have had a car crash in the last year, 120 were randomly...

) Among drivers who have had a car crash in the last year, 120 were randomly selected and categorized by age, with the results listed in the table below. Age Under 25 25-44 45-64 Over 64 Drivers 49 30 17 24 If all ages have the same crash rate, we would expect (because of the age distribution of licensed drivers) the given categories to have 16%, 44%, 27%, 13% of the subjects, respectively. At the 0.025 significance level, test the...

(1 point) Among drivers who have had a car crash in the last year, 220 were...

(1 point) Among drivers who have had a car crash in the last year, 220 were randomly selected and categorized by age, with the results listed in the table below. Age Under 25 25-44 45-64 Over 64 Drivers 88 51 31 50 If all ages have the same crash rate, we would expect (because of the age distribution of licensed drivers) the given categories to have 16%, 44%, 27%, 13% of the subjects, respectively. At the 0.05 significance level, test...

A car insurance company has determined that 10% of drivers were involved in a car accident last year.

A car insurance company has determined that 10% of drivers were involved in a car accident last year. If 3 drivers are randomly selected, what is the probability of getting: a) one driver involved in a car accident last year? P(x = 1) = b) fewer than two drivers who were involved in a car accident last year? P(x2)=

A car insurance company has determined that 9% of all drivers were involved in a car accident last year.

A car insurance company has determined that 9% of all drivers were involved in a car accident last year. Among the 11 drivers living on one particular street, 3 were involved in a car accident last year. If 11 drivers are randomly selected, what is the probability of getting 3 or more who were involved in a car accident last year?

Among all the car accidents last year, 492 deaths were reported in the road of which...

Among all the car accidents last year, 492 deaths were reported in the road of which 240 wore belts and 252 wore no belts. Of the 2334 people involved in serious accidents 1945 wore seat belts and the rest no to. Calculate the probability of dying by not wearing a belt b. Calculate the probability of dying if you wear the belt c. If a person dies in a car accident; What is the probability of who will wear a...

The age for race car drivers were selected at random. The following ages were obtained: 32...

The age for race car drivers were selected at random. The following ages were obtained: 32 32 33 33 41 29 38 32 33 23 27 45 52 29 and 25. (Give three decimals for all number answers.) 1. What is the average for this sample? 2. What is the standard deviation for this sample? Use a .05 significance level to test the claim that the mean age of all race drivers is greater than 30 years. 3. What is the significance level? ...

The data below represents yearly car insurance premium in the US for 10 randomly selected drivers....

The data below represents yearly car insurance premium in the US for 10 randomly selected drivers. Assuming the data is normally distributed, test the claim that the average yearly car insurance premium for a person in the US is $1,916 using a level of significance of 1%. 1905, 1940, 1939, 1952, 1931, 1937, 1920, 1913, 1928, 1934 Enter the Null Hypothesis for this test: H0: Enter the Alternative Hypothesis for this test: H1: What is the p-value for this hypothesis...

Subjects