Answer:
25/32
Step-by-step explanation:
First you want to simplify the fractions. So, 20/32 would be 5/8, and 25/20 would be 5/4. Next, you want to multiply both the numerator and denominator. So, 5x5 is 25 for the numerator, and 8x4 is 32 for the denominator, leaving you with 25/32 for the answer.
Answer:
The probability that can afford to spend between $800 and $900
P(800≤X≤900) = 0.6826
The percentage of that can afford to spend between $800 and $900
P(800≤X≤900) = 68 percentage
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that the mean of the Normal distribution = $850
Given that the standard deviation of the Normal distribution = $50
Let 'X' be a random variable in a normal distribution
Let x₁ = 800
Let x₂ =850
<u><em>Step(ii):-</em></u>
The probability that can afford to spend between $800 and $900
P(800≤X≤900) = P(-1≤Z≤1)
= P(Z≤1) - P(Z≤-1)
= 0.5 + A(1) - (0.5 - A(-1))
= A(1) +A(-1)
= 2× A(1) (∵ A(-1) =A(1)
= 2 × 0.3413
= 0.6826
The percentage of that can afford to spend between $800 and $900
P(800≤X≤900) = 68 percentage
Answer:
0.61=61/100
Step-by-step explanation:
Answer:
The unit rate is 20.
Step-by-step explanation:
Divide 100 (words) by 5 (minutes) to get 20 words every minute.
Answer: 0.0080
Step-by-step explanation:
Given : The manufacturer's website states that the average weight of each stick is oz with a standard deviation of oz.
We assume the weight of the drumsticks is normally distributed.
Using formula , the z-value corresponds x=2.66 will be :-
By using the standard normal distribution table for z, we get
P-value =
Hence, the probability of the stick's weight being 2.66 oz or greater=0.0080