Answer:
y=X+3
Step-by-step explanation:
brainly pls
Answer:
Step-by-step explanation:
I THINK IT IS:
C AND MAYBE D?
sorry i had captions on
Answer:
J 28
Step-by-step explanation:
3x-10 = plug in x for angle C
84-10 = subtract for angle C
74 = C
3x/3 - B/2
For last Angle B always look for 180
74 + 50 = 124
180 - 124 = 56
(2x) = plug in x for angle B
56 = B
x = B/2
x = 3x/3 -B/2
x = 28
Hope this helps
Answer:
Step-by-step explanation:
given that the following data represent the discrete probability distribution for the number of stars that reviewers have a first edition statistics reference book.
Stars 5 4 3 2 1
Probability 25% 35% 20% 10% 10%
H0: Second edition is as per the above probabilities
Ha: atleast one is different from the above probability
(two tailed chi square test)
Alpha = 0.025
Assuming H0 to be true we calculate expected frequencies for total 80
chi square calculatons are shown below
df = 4
5 4 3 2 1 Total
Observed 28 28 13 6 5 80
Expected 20 28 16 8 8 80
chi square
(O_E)^2/E 3.2 0 0.5625 0.5 1.125 5.3875
p value =0.1455
Since p value >0.025, we accept H0
The expected requency of three-star reviews is ________.16