Question

The Acme Car Company claims that no more than 8% of its new cars
have a manufacturing defect. A quality control inspector randomly
selects 300 new cars and finds that 33 have a defect. Should she
reject the “8% or less” claim using **1PropZTest**?
Assume a significance level of 0.05.

Select one:

a. Yes, because the p-value is 0.016

b. Yes, because the p-value is 0.028

c. No, because the p-value is 0.16

d. No, because the p-value is 0.28

e. Yes, because the p-value is 0.032

f. There is not enough evidence to reach a conclusion

What is the probability of getting a two-dice total less than 6?

Select one:

a. 5/12

b. 8/36

c. 1/3

d. 10/36

e. 1/4

f. 7/36

Answer #1

A company believes that the average price of its new model is
less than the claimed value of $11,500 (with a standard deviation
of $700). A check of the sticker prices on 32 cars finds the
average price is $11,200. At , test the belief .

A company believes that the average price of its new model is
less than the claimed value of $11,500 with a standard deviation of
$700. A check of the sticker price on 32 cars finds the average is
$11,200. At = 0.05, test the company 's belief

A company believes that the average price of its new model is
less than the claimed value of $11,500 (with a standard deviation
of $700). A check of the sticker prices on 32 cars finds the
average price is $11,200. At α = 0.05, test the
company's belief.

Previously, 5% of mothers smoked more than 21 cigarettes during
their pregnancy. An obstetrician believes that the percentage of
mothers who smoke 21 cigarettes or more is less than 5% today. She
randomly selects 145 pregnant mothers and finds that 4 of them
smoked 21 or more cigarettes during pregnancy. Test the
researcher's statement at the α=0.05 level of significance.
What are the null and alternative hypotheses?
H0:p =0.05 versus H1: p <0.05
(Type integers or decimals. Do not round.)...

A book claims that more hockey players are born in January
through March than in October through December. The following data
show the number of players selected in a draft of new players for a
hockey league according to their birth month. Is there evidence to
suggest that hockey players' birthdates are not uniformly
distributed throughout the year? Use the level of significance
α=0.01.
Hockey League Players' Birth Month
Birth Month
January-March
April-June
July-September
October-December
Frequency
61
56
25
32...

Cars on Campus. Statistics students at a
community college wonder whether the cars belonging to students
are, on average, older than the cars belonging to faculty. They
select a random sample of 49 cars in the student parking lot and
find the average age to be 9.7 years with a standard deviation of
6.7 years. A random sample of 49 cars in the faculty parking lot
have an average age of 3.1 years with a standard deviation of 3.2
years....

An administrator said that he believes that 50% of all students
have more than 60 credit hours. Use the data found in the column
labeled “More than 60 credit hours attained” to answer this
question. “No” means that the student has not attained more than 60
credit hours. “Yes” means that the student has attained more than
60 credit hours.
a. Write the claim in symbolic form
b. Write the null and alternative hypothesis in symbolic
form
c. State the...

Most people have returned clothing or other items to stores.
Acme holding company is particularly interested in the clothes that
have been returned after the winter holidays. It requires its
stores to keep records of these clothes if they cost over $75.00.
Acme’s corporate office is worried about a new store (N) it
recently purchased. The store seems to have a high proportion of
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A linear model to predict the Price of a used car (in $) from
its Mileage (in miles) was fit to 33 used cars that were available
during a one-week period within 200 miles of a particular city.
The model is shown below. Complete parts a through g below.
Price=21,253.54−0.11024 Mileage
a) What is the explanatory variable?
A.Price, because the mileage of the car is used to predict the
price
B.Price, because the price of the car is used to...

A tire company claims that their new tires will have an average
life of 139000 miles. A consumer group wishes to test that this
claim is not true at the α = 0.05 level of significance. a) Which
would be the correct hypotheses for this test? H 0 : μ = 139000 , H
A : μ < 139000 H 0 : μ = 139000 , H A : μ ≠ 139000 H 0 : p =
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