Answer:
H0 : μ = 15
H1 : μ < 15
−6.170774
Step-by-step explanation:
Given :
n=115, barx =11.3, and s=6.43
H0 : μ = 15
H1 : μ < 15
−0.053658 ;
The test statistic :
(xbar - μ) ÷ s/sqrt(n)
(11.3 - 15) ÷ (6.43/sqrt(115))
Test statistic = −6.170774
Rejection region :
Reject Null ; if
Tstatistic < Zcritical
The P value is 0.00001 ; using the p value from Z calculator
Since,
P value < α
0.00001 < 0.05
Reject the null
Answer:
x = 57 y = 137
Step-by-step explanation:
x + 43 + 90 = 180
x + 43 + 90 - 90 = 180 - 90
x + 43 = 90
x + 43 - 43 = 90 - 43
x = 57
43 + y = 180
43 + y - 43 = 180 - 43
y = 137
He will run 20miles for 10 minutes
Rate = Distance / time
for the first jog
distance = 8 miles
time = 4 minutes
rate = 8 / 4
rate = 2 miles/minutes
to calculate the distance covered in 10 minutes
from Rate = distance / time
Introducing cross multiplication
Distance = rate x time
Distance = 2 x 10
Distance = 20miles
Answer:
1cm³
Step-by-step explanation:
You do not need a calculator for this.
The formula for the volume of a rectangular prism is:
Length × Width × Height = Volume
If we substitute our numbers in:
5/4 × 4/3 × 3/5 = 1cm³
All you need to do is multiply across.
5 × 4 × 3 = 60
4 × 3 × 5 = 60
The numerator and denominator both equal 60. So the fraction would look like this if you were to keep it as a fraction.
60/60
Answer:
https://ieltsonlinetests.com/vi/wot/result/53248
