Answer:
Step-by-step explanation:
The hypothesis is written as follows
For the null hypothesis,
µd ≤ 10
For the alternative hypothesis,
µ > 10
This is a right tailed test
Since no population standard deviation is given, the distribution is a student's t.
Since n = 97
Degrees of freedom, df = n - 1 = 97 - 1 = 96
t = (x - µ)/(s/√n)
Where
x = sample mean = 8.9
µ = population mean = 10
s = samples standard deviation = 3.6
t = (8.9 - 10)/(3.6/√97) = - 3
We would determine the p value using the t test calculator. It becomes
p = 0.00172
Since alpha, 0.01 > than the p value, 0.00172, then we would reject the null hypothesis. Therefore, At a 1% level of significance, there is enough evidence that the data do not support the vendor’s claim.
Answer:
B
Step-by-step explanation:
I would say B because they're only 2 options head and tails.
✩brainliest appreciated ✩
Answer:
x=-4
Step-by-step explanation:
-1/2x+3=4-1/4x
-1/2x+1/4x=4-3
-2/4x+1/4x=1
-1/4x=1
x=1/(-1/4)
x=(1/1)(-4/1)
x=-4/1
x=-4
