Question

Sam decides he wants to know whether 45% of his customers own only one cat.

a. Set up the null and alternative hypothesis (DO NOT TEST).

b. If Sam wants to minimize the probability of making a
**type 2** error, should he set alpha equal to 0.05 or
0.01? Explain.

c. In terms of the problem, what does it mean if he makes a
**type 1** error?

d. What would be the consequences of making such an error?

Answer #1

A)

Ho : p = 0.45

H1 : p ╪ 0.45

...........

B)

set alpha equal to 0.05

...........

C)

TYPE I error is rejection of true null hypothesis

so, it means he concluded that not 45% of his customers own only one cat but inactual 45% of his customers own only one cat

..............

d)

consequences are : we have wrongly conlcude that not 45% of his customers own only one

...........................

THANKS

revert back for doubt

please upvote

The manager of a coffee shop wants to know if his customers’
drink preferences have changed in the past year. He knows that last
year the preferences followed the following proportions – 34%
Americano, 21% Cappuccino, 14% Espresso, 11% Latte, 10% Macchiato,
10% Other. In a random sample of 450 customers, he finds that 115
ordered Americanos, 88 ordered Cappuccinos, 69 ordered Espressos,
59 ordered Lattes, 44 ordered Macchiatos, and the rest ordered
something in the Other category. Run a...

One Sample t-test. A high school principal wants to know whether
holding a review session affects final exam performance. Out of a
large class, he selects a random sample of 9 students for the
review session. Here are the results on the final exam: x bar= 28,
s= 4, n= 9. In previous semesters, the final exam average was 24.
Conduct a one-sample t-test to see if the average final exam score
increase was real or if it was just...

In 1995, 40% of adolescents stated they prayed daily. A
researcher wants to know whether this percentage has risen since
then. He surveys 50 adolescents and finds that 28 pray on a daily
basis. Is this evidence that the proportion of adolescents who pray
daily has increased at the ∝= 0.05 level of significance? Be sure
to verify that the requirements that allow use of the normal model
to test the hypothesis is satisfied.
state null and alternative hypotheses,
•...

A sales analyst wants to determine whether there is
a difference in the mean monthly sales of a company’s four sales
regions. Several salespersons from each region are randomly
selected and each provides his or her sales amounts (in thousands
of dollars) for the previous month. The results are listed in the
following table. At alpha = 0.05, can the analyst conclude that
there is a difference in the mean monthly sales among the sales
regions? Assume that each population...

One Management professor adopted a crossword puzzle exercise in
his introductory management information systems (MIS) class,
because he believes that the most important effects of engaging in
a crossword exercise is the great workout it gives one's
brain—solving crossword puzzles requires several skills, such as
spelling, reasoning, making inferences, evaluating choices, and
drawing conclusions. That is, the exercise may enhance one's
ability to memorize words. He wants to know whether or not the
crossword puzzle exercise can accelerate the learning...

Suppose a researcher RW decides to give his nine participants a
series of 50 photographs. He asks the participants to rank order
(from 1-50) how well-dressed the individuals in the photograph were
and to rank order (from 1-50) how intelligent they thought the
individuals in the photograph were. One of the photographs was of a
well known actor. The well-dressed rankings and the intelligence
rankings for this one photo are as follows.
WELL-DRESSED
INTELLIGENT
14
12
35
39
16
17...

A market analyst wants to know if the new website he designed is
showing increased page views per visit. A customer is randomly sent
to one of two different websites, offering the same products, but
with different designs. The accompanying table shows the data from
five randomly chosen customers from each website. Test the null
hypothesis that the mean number of page visits is the same for the
two websites. Assume that the data come from a population that is...

Chester King has been a sailor for his entire life. As
he has saved some money, he now wants to go into business for
himself. Chester decides to become the captain of his own tugboat
which he will name “American Queen”. Chester has also always wanted
to live in California, so he decides to buy his boat and operate it
on the San Francisco Bay. Chester figures he better talk to an
attorney before buying the boat about things like...

A market analyst wants to know if the new website he designed is
showing increased page views per visit. A customer is randomly sent
to one of two different websites, offering the same products, but
with different designs. Assume that the data come from a
distribution that is Normally distributed. The data is shown in the
table to the right. Complete parts a through c below.
Website 1:
n1= 70
y1= 7.8
s1= 5.1
Website 2:
n2= 95
y2= 7.2...

****PLEASE ANSWER ALL QUESTIONS****
Question 12 (1 point)
A medical researcher wants to determine if the average hospital
stay of patients that undergo a certain procedure is greater than
8.7 days. The hypotheses for this scenario are as follows: Null
Hypothesis: μ ≤ 8.7, Alternative Hypothesis: μ > 8.7. If the
researcher takes a random sample of patients and calculates a
p-value of 0.0942 based on the data, what is the appropriate
conclusion? Conclude at the 5% level of significance....

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 23 minutes ago

asked 39 minutes ago

asked 39 minutes ago

asked 44 minutes ago

asked 45 minutes ago

asked 45 minutes ago

asked 47 minutes ago

asked 53 minutes ago

asked 56 minutes ago

asked 1 hour ago

asked 1 hour ago