Question

You have an SRS of size 36. Use Mintab to calculate the critical value t* such that

a. t has a probability 0.025 to the right of t*;

b. t has a probability of 0.05 to the right of t*;

c. t has a probability of 0.25 to the right of t*;

d. t has a probability of 0.75 to the right of t*;

Sidenote: I do not expect someone to answer each question of this, but could someone who has minitab show me how to calculate this with minitab?

Answer #1

a)

go to graph: probability distribution plot: select viiew probability tab:distribution t: degree of freedom=36-1 =35

shaded area: right tail ;probability =0.025

from above t value =2.030

b()

as above putting p =0.05

t =1.690

c)

for p=0.25

t=0.682

d)

for p=0.75

t= -0.682

You have an SRS of size 15 and calculate the one-sample t
statistic. What is the critical value t* such that
(a) t has probability 0.01 to the right of t*?
(b) t has probability 0.85 to the left of t*?

What critical value t* from the t-table would you use for a
confidence interval for the mean of the population in each of the
following situations? NOTE: The critical value is just another name
for the t* values we read off from the type of T Table you have in
your notes. (Use 3 decimal places)
(a) A 95% confidence interval based on 4 observations
(b) A 99% confidence interval from an SRS of 9 observations
(c) An 90% confidence...

Use the Student's t-distribution to find the t-value for each of
the given scenarios. Round t-values to four decimal places.
Find the value of t such that the area in the left tail of the
t-distribution is 0.0005, if the sample size is 19.
t=
Find the value of t such that the area in the right tail of the
t-distribution is 0.025, if the sample size is 41.
t=
Find the value of t such that the area in...

1. Calculate the critical degrees of freedom and
identify the critical t value for a single-sample t test in each of
the following situations, using p=.05 for all scenarios. Then,
state whether the null hypothesis would fail to be rejected or
rejected:
a. Two-tailed test, N = 14, t = 2.05, (df=
Answer:, critical t = Answer:, Reject or Fail to Reject
Ho:
Answer:
b. One-tailed test, N = 14, t = 2.05, (df=
Answer:, critical t = Answer:, Reject...

You plan to survey an SRS of potential customers who have been
asked to use your new product and the product of a leading
competitor for one week. After one week, you will ask each subject
in your sample which product they preferred. Let n be the sample
size, and X = count of number of subjects who state that they
prefer your product.
Assume that you plan to construct a large-sample confidence
interval for p, the true proportion of...

A traffic cop has been determined that (2 %) of drivers checked
to use their mobile phones and (8 %) of drivers checked do not wear
seat belts. In addition, it has been observed that the two
infractions are independent of one another. If the cop stops seven
drivers at random:
a. Calculate the probability that exactly five of the drivers have
committed any one of the two offenses.
b. Calculate the probability that at least one of the drivers...

Test the hypothesis that the proportion of students who wish
OBAMA was still president=.3. Use a .10 significance level, a
two-tail test, and the following data: A sample of 100 students has
40 who wish OBAMA was still president
NB: Please can you tell me the table for Z
critical Value, Table for P-Value, Table for T critical Value,
Table for x^2(that is X raise to power 2) Please this is a
self-trained student. I have been trying to get the...

Show all your work. Indicate clearly the methods you use,
because you will be scored on the correctness of your methods as
well as on the accuracy and completeness of your results and
explanations.
A bank categorizes its
customers into one of three groups based on their banking habits. A
random sample of 30 customers from each group was selected, and the
number of times each customer visited the bank during the past year
was recorded. The following table shows...

When σ (population standard deviation) is unknown
[Critical Value Approach]
The value of the test statistic t for the sample mean is
computed as follows:
t = with
degrees of freedom d.f. = n – 1
where n is the sample size, µ is the mean of the null
hypothesis, H0, and s is the standard deviation of the
sample.
t is in the rejection
zone: Reject the null hypothesis, H0
t is not in the rejection...

Use
t-distribution and critical-value approach
A resturant says that its hamburgers have 10 grams of fat. You
work for a nutritional health agency and are asked to test this
whether they actually have more than this. You find that a random
sample of 9 hamburgers has a mean fat context of 13.5 grams and a
stamdard deviation of s=5.8 grams. At a=0.10, do you have enough
evidence to reject the resturants claim?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 18 minutes ago

asked 19 minutes ago

asked 27 minutes ago

asked 34 minutes ago

asked 37 minutes ago

asked 39 minutes ago

asked 46 minutes ago

asked 53 minutes ago

asked 59 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago