Answer:
t = -1.633<2.06
<u>Step 1</u>
Here χ is the sample mean
μ is the population mean
S is the sample standard deviation
n be the sample size
The degrees of freedom γ =n-1
<u>Step 2:-</u>
a) we will use t- distribution test
Here sample size n = 25
the sample mean χ =640
population mean μ =650
sample standard deviation S=30
<u>Step 3:</u>-
b) we will use two tailed test or left tailed test
Null Hypothesis H0 : μ=650
Alternative Hypothesis Ha:μ<650
<u>Step 4:</u>-
c)
[tex]t = -1.633
<u>Step 5</u> :-
<u>Degrees of freedom:-</u>
The d<u>egrees of freedom of t- distribution</u>
γ = n-1 = 25-1 = 24
The table value of t are 5% level with 24 degrees of freedom For two tailed test is 2.06
<u>Step 6:</u>-
Since the calculated value of t < tabulated value of t, so we accepted the null hypothesis.
The data support the assumption of a population is normally distributed
Answer:
130 feet
Step-by-step explanation:
I understand why you would need help with this question as there is a lot of unimportant information. What we need to figure out is the perimeter of a rectangle 38 feet long and 27 feet wide. This is pretty simple all you need to do is add each term twice so we have
38+38+27+27 which gets us 130
Answer:
d the diameter is 4 inches.
Step-by-step explanation:
d=2r=2×2=4
Answer:
SSS Congruence Theorem
Step-by-step explanation: