Answer:
Um, there is nothing here, what's the image of the composite solid?
Answer:
Step-by-step explanation:
Let x be the random variable representing the lifespan of laptops. Since the lifespans are normally distributed and population mean and population standard deviation are known, we would apply the formula,
z = (x - µ)/(σ/√n)
Where
x = sample mean
µ = population mean
σ = standard deviation
n = number of samples
From the information given,
µ = 24.5
σ = 2.6
n = 33
the probability that the mean lifespan of these laptops will be less 23.8 months is expressed as
P(x ≤ 23.8)
For x = 23.8
z = (23.8 - 24.5)/(2.6/√33) = - 1.55
Looking at the normal distribution table, the probability corresponding to area on the left of the z score is 0.061
P(x ≤ 23.8) = 0.061
Answer:
√64
Step-by-step explanation:
In mathematics, an expression involving the root (√) sign is regarded as a radical.
64^(1/2)
This is the same as;
√64
- √(1/2&64) This option is wrong.
- √64 This option is correct
- 1/2 √64 This option is wrong.
- 8 This option is wrong.
Answer:
17.5
Step-by-step explanation:
Remember PEMDAS
step 1 : divide 7 by 2
7 ÷ 2 = 3.5
step 2 : rewrite the equation
19 + 3.5 - 5
step 3 : add 19 + 3.5
19 + 3.5 = 22.5
step 4 : subtract 22.5 - 5
22.5 - 5 = 17.5
1- Probability 1/2
2-Probability 5/6
3-Probability 5/6
4-Probability 3/4
maybe you mistyped 2 but those are the probabilities for each with what the question says