Product tells us we’re going to multiply.
6 x 6r = 36r
8s x 4 = 32s
We don’t have a number value to substitute in for r or s, so we just leave those variables as they are.
LMK if you have questions
Answer:
Population mean = 7 ± 2.306 × 
Step-by-step explanation:
Given - A university researcher wants to estimate the mean number
of novels that seniors read during their time in college. An exit
survey was conducted with a random sample of 9 seniors. The
sample mean was 7 novels with standard deviation 2.29 novels.
To find - Assuming that all conditions for conducting inference have
been met, which of the following is a 94.645% confidence
interval for the population mean number of novels read by
all seniors?
Proof -
Given that,
Mean ,x⁻ = 7
Standard deviation, s = 2.29
Size, n = 9
Now,
Degrees of freedom = df
= n - 1
= 9 - 1
= 8
⇒Degrees of freedom = 8
Now,
At 94.645% confidence level
α = 1 - 94.645%
=1 - 0.94645
=0.05355 ≈ 0.05
⇒α = 0.5
Now,

= 0.025
Then,
= 2.306
∴ we get
Population mean = x⁻ ±
×
= 7 ± 2.306 × 
⇒Population mean = 7 ± 2.306 × 
Yes, i am what do you need help with?
Answer:
A is 13
Step-by-step explanation:
That is because you have to K C C. Since there is no l9onger negatives, you can add
Answer: 0.8137
Step-by-step explanation:
As per given , we have

Sample size : n= 47
Let
be the sample mean o.
Then, the probability that the mean of a sample of 47 families will be between 16.6 and 17.6 pounds will be :


[∵
]

[By using p-value calculator]

Hence, the probability that the mean of a sample of 47 families will be between 16.6 and 17.6 pounds= 0.8137