Answer:
the probability that the mean number of hours they watch TV is greater than 26.3 hours is 0.034
Step-by-step explanation:
<u>Last part of the question is wrong. It should be:</u>
Find the probability that the mean number of hours they watch TV is greater than 26.3 hours.
P('the mean number of hours the children between ages of 2 and 5 watch TV' >26.3 hours) = P(t>t*) where
t* is the t-score of 26.3 hours. It can be found using the equation:
where
- M is the mean number of hours the children between ages of 2 and 5 watch TV (25 hours)
- s is the standard deviation (3 hours)
- N is the sample size (20)
: ≈1.938
Corresponding p-value with 19 degrees of freedom: P(t>1.938) is ≈ 0.034
Answer:
arc BC = 84 degrees
Step-by-step explanation:
notice:
need to find n before finding arc BC
(13n -16) + (7n + 12) + 6n = 360
13n + 7n + 6n - 16 + 12 = 360
26n - 4 = 360
26n = 364
n = 364/26 = 14
so arc BC = 6*14 = 84 degrees
I believe the answer should be 0 because that she startes her bank account with a balance of $3,000 and still had $3,000 at the end of the week. This means that 0 would represent the change, since the balance did not change