Answer:
b. Do not reject the null hypothesis
Step-by-step explanation:
Given that two random samples of 40 students were drawn independently from two populations of students. Assuming equal variances
we have the following data.
Sample 1
Mean:
76
Standard deviation:
8
Sample size:
40
Sample 2
Mean:
73
Standard deviation:
7
Sample size:
40
Difference -3.000
Standard error 1.681
95% CI -6.3462 to 0.3462
t-statistic -1.785
DF 78
Significance level P = 0.0782
Since p value >0.05,
b. Do not reject the null hypothesis
Answer:
50.3
Step-by-step explanation:
area of a circle = πr²
where r = radius
given radius = 4yd
so we have A = πr²
==> plug in r = 4 ( because the given radius is 4yd )
A = π(4)²
==> evaluate exponent
A = 16π
==> simplify 16π
A = 50.3 ( rounded to the nearest tenth )
The answer is 1.5 because 1/2= .5 multiply that by 3 boom
Answer:
6.
Step-by-step explanation:
First to find the probability to get a single toy out of every meal, you divide 3 by 65 to get .461538 (Shortened). Then multiply the decimal by 130 to get the amount expected.
Answer and Step-by-step explanation:
a. The strings {a, b, c} with at least one a and at least one b.
Solution: ∑ = {a, b, c}
where
(a +b +c)(a (a +b +c)*b + b (a +b +c) a (a +b +c)*
b. The set of 0’s and 1’s string whose tenth symbol from the right end is 1.
Sol: (0+1)*1(0+1)9
c. The set of 0’s and 1’s string with at most one pair of consecutive 1’s.
sol: (0+10)(11+∑)(0+10)