Answer:
test stat=1.7986
p value =0.0391
Step-by-step explanation:
given
n=50
d = 7.3
s d = 28.7
formula to calculate test statistic
t=
⇒ t=
⇒t=1.7986
for 49 df and t=1.7986 ,p value can be obtained from software
p value=0.0391
Answer: The probability is 0.013
Step-by-step explanation:
Out of 80 people, 28 of them dance with the hands touching the ground.
Then, the probability of selecting at random someone that dances with the hands touching the floor is equal to the number of persons that dance in that way, divided by the total number of persons.
For the first selection, this is p1 = 28/80
now, the probability in the second selection will be 27/79, because we have selected 1 out of the 28 (and also 1 out of the 80)
for the third and the fourth we have:
p3 = 26/78
p4 = 25/77
Then the probability of the fourth events is equal to the product of the four probabilities:
P = (28/80)*(27/79)/(26/78)/(25/77) = 0.013
If a number in parenthesis is directly next to a number without, then the two numbers need multiplied.
-12(5/6)(-2/15) is an example of a double multiplication. But we'll multiply -12 and 5/6 first, then multiply the product by -2/15.
-12x5/6=14 2/5
14 2/5x-2/15=-1 23/25
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hope it helps
sorry if it doesn't
Answer:
m<4= 81 by the alternate interior postulate
Orange- 2/9
Pink- 4/9
Yellow- 3/9
:)
