$2.35 to buy lunch at school for 9 days
so you take 2.35 and multiply it by 9
you get 21.15
2.35 x 9 = 21.15
therefore he spent 21.15 in 9 days
Answer:
a) T test
b) Claim
because critical value is not equal to test statistic then reject null hypothesis
Step-by-step explanation:
Construction of hypothesis
H₀ : p = 75
H₁ : p ≠ 75
Here Standard deviation = 7
sample = n = 50
Average = x-bar = 78
Level of significance:
∝ = 5% = 0.05
Degree of freedom:
df = n-1
= 50 -1 = 49
Critical value :
± 1.96
a) T test
test t is used as average X mean is used
Test Statistic:
t = X₂ - X₁ / Sd /√n
= 78 - 75 / 7/√50
=3.0304
Critical region :
We take two tail T test
test statistic is in reject interval. Reject H₀
b) Claim
because critical value is not equal to test statistic then reject null hypothesis
Answer:
27
Step-by-step explanation:
30% of 90 can be written as 30% × 90
= 30/100 × 90
= 27
If they are perpendicular, they form a right angle. For example, this is perpendicular:
I_
If likes are parallel, they run along each other, never meeting. For example, these two lines are parallel:
___
___
Hope this helps!
Answer:
2 slices of pizza is sausage
Step-by-step explanation:
1/3 of pizza is 4 slices(pepperoni)
2/4 of pizza is 1/2 which is 6(chicken)
There are 12 slices in all so 12-(6+4) = 2 sausage
