Answer:
What is the question?
Step-by-step explanation:
Answer:
z= 2.38
P = 0.008656
Step-by-step explanation:
Here n= 500 and p~= 464/500= 0.928 and q`= 1- 0.928 = 0.072
We formulate our null and alternate hypothesis as
H0 = 0.9 ; H0 > 0.9
The degree of confidence = 90%
z₀.₀₅ = 1.645 for α= 0.05
We use the test statistic
z= x- np/√npq
z= 466-500 *0.9/ √500 * 0.9(1-0.9)
z= 466- 450/ √45
z= 16/6.7082
z= 2.38
As the calculated value of z= 2.38 is greater than α =1.645 so we reject H0.
If H0 is true the P value is calculated as
P = 1- Ф( 2.38)
P = 1-0.991344=0.008656
Answer:
Rate = 0.11%
Step-by-step explanation:
Using I = PRT
Where,
- P = Principal = $1200
- R = Rate = ✘
- T = Time in years = 0.75 years
- I = Interest = $99
⟼ I = PRT
Substitute values
⟼ 99 = 1200 × 0.75 × ✘
Multiply
⟼ 99 = 900✘
Divide both sides by the coefficient of ✘
⟼ 99/900 = ✘
⟼ ✘ = 0.11
Therefore, Rate is 0.11%
Answer: x= 30 when y = 5
Step-by-step explanation:
So, first find the unit rate. 24/4 = 6
So, for ever y you have 6x.
5 * 6 = 30
The ratio of sue's earnings to bob's is 2:1
2+1=3
24÷3=8
8×2=$16
so sue earned $16 and Bob earned $8
