Question
In: Statistics and Probability
The bull and alternate hypothesis are: Ho:u1<u2 H1:u1>u2 A random sample of 20 items from the...
The bull and alternate hypothesis are:
Ho:u1<u2
H1:u1>u2
A random sample of 20 items from the first population showed a mean
of 100 and a standard deviation of 15. A sample of 16 items for the
second population showed a mean of 94 and a standard deviation of
8. use the 0.5 significant level.
Solutions
orchestra answered 1 year agoRelated Solutions
1)Test hypothesis? 2)Do we accept or Reject? H0: U1-U2=0 H1: U1-U2>0 X1: 501051 S1: 4000.64 X2:...
1)Test hypothesis?
2)Do we accept or Reject?
H0: U1-U2=0 H1: U1-U2>0
X1: 501051 S1: 4000.64
X2: 52299.17 S2: 4000.01
N1: 2495 N2:2498
The null hypothesis and the alternate hypothesis are: H0: The frequencies are equal. H1: The frequencies...
The null hypothesis and the alternate hypothesis are:
H0: The frequencies are equal.
H1: The frequencies are not equal.
Category
f0
A
10
B
10
C
20
D
10
State the decision rule, using the 0.01 significance level.
(Round your answer to 3 decimal places.)
Compute the value of chi-square. (Round your answer to 2
decimal place.)
What is your decision regarding H0?
___ (do not reject or reject) H0. The frequencies are ____
The null hypothesis and the alternate hypothesis are: H0: The frequencies are equal. H1: The frequencies...
The null hypothesis and the alternate hypothesis are:
H0: The frequencies are equal.
H1: The frequencies are not equal.
Category
f0
A
10
B
30
C
30
D
10
State the decision rule, using the 0.05 significance level.
(Round your answer to 3 decimal places.)
Compute the value of chi-square. (Round your answer to 2
decimal place.)
What is your decision regarding H0?
Consider the following hypothesis test. H0: = 20 H1: ≠ 20 The sample size...
Consider the following hypothesis test. H0: = 20 H1: ≠ 20
The sample size is 200 and the standard deviation of the population
is 10. Use a = 0.05. What is the probability of making the Type
II error if the real value of the population is:
a. μ = 18.0
b. μ = 22.5
c. μ = 21.0
To test H0: mean = 20 vs H1: mean < 20 a simple random sample of...
To test H0: mean = 20 vs H1: mean < 20
a simple random sample of size n = 18 is obtained from a population
that Is known to be normally distributed
(a) If x-hat = 18.3 and s = 4.3, compute the test statistic
(b) Draw a t-distribution with the area that represents the
P-value shaded
(c) Approximate and interpret the P-value
(d) If the researcher decides to test this hypothesis at the a =
0.05 level of significance,...
4) Given the following hypothesis: Ho: = 480 H1: = 480 A random sample of 14...
4) Given the following hypothesis:
Ho: = 480
H1: = 480
A random sample of 14 observations is selected from a normal
population. The sample mean was 488 and the sample standard
deviation 8. Using the 0.10 significance level
a) State the decision rule. (Negative
amount should be indicated by a minus sign. Round your answer to 3
decimal places)
Reject HO when the test statistic is
____ the interval (__ , ___)
b) Compute the value of the test...
Given the following hypothesis: H0: μ = 100 H1: μ ≠ 100 A random sample of...
Given the following hypothesis:
H0: μ = 100 H1: μ ≠ 100
A random sample of six resulted in the following values:
118 ,120 ,107 ,115 ,115 ,107
Using the 0.02 significance level, can we conclude that the mean
is different from 100?
a. What is the decision rule? (Negative answer should be
indicated by a minus sign. Round the final answers to 3 decimal
places.)
Reject H0: μ = 100 and accept H1: μ ≠ 100 when the test...
Given the following hypothesis: H0: μ = 100 H1: μ ≠ 100 A random sample of...
Given the following hypothesis:
H0: μ = 100
H1: μ ≠ 100
A random sample of six resulted in the following values:
114
120
119
108
113
108
Using the 0.01 significance level, can we conclude that the mean
is different from 100?
a. What is the decision rule? (Negative
answer should be indicated by a minus sign. Round the final answers
to 3 decimal places.)
Reject H0: μ = 100 and accept
H1: μ ≠ 100 when the test...
To teat Ho: u = 20 versus H1: u< 20, a simple random sample of size...
To
teat Ho: u = 20 versus H1: u< 20, a simple random sample of size
n=20 is obtained from a population that is known to be normally
distributed. Answer parts B through D.
(a) if x=18.2 and s=3.8. Test statistic is -2.12
(b)- Draw a t-distribution with thearea that represents the
P-value shaded. Which of the following graphs show the correct
shaded region?
Approximate the P-value. Choose the correct range for the P-value
below.
A- 0.10< P-value <0.15
B-...
1) Let U1, U2, ... be independent random variables, each uniformly distributed over the interval (0,...
1) Let U1, U2, ... be independent random variables, each
uniformly distributed over the interval (0, 1]. These random
variables represent successive bigs on an asset that you are trying
to sell, and that you must sell by time = t, when the asset becomes
worthless. As a strategy, you adopt a secret number \Theta and you
will accept the first offer that's greater than \Theta . The offers
arrive according to a Poisson process with rate \lambda = 1....
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