Answer:
1900.700
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let x be the random variable representing the minutes people spend browsing websites. Since the population mean and population standard deviation are known and it is a normal distribution, we would apply the formula,
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = standard deviation
From the information given,
µ = 4.5 minutes
σ = 1.2 minutes
The probability that people spent between 4 and 6 minutes browsing the sites is expressed as
P(4 ≤ x ≤ 6)
For x = 4,
z = (4 - 4.5)/1.2 = - 0.42
Looking at the normal distribution table, the probability corresponding to the z score is 0.3372
For x = 6
z = (6 - 4.5)/1.2 = 1.25
Looking at the normal distribution table, the probability corresponding to the z score is 0.8944
Therefore,
P(4 ≤ x ≤ 6) = 0.8944 - 0.3372 = 0.5572
The percentage of people spending between 4 and 6 minutes browsing the sites
0.5572 × 100 = 55.72%
Answer:
6, 8, 10
Step-by-step explanation:
The values must satisfy the pythagorean theorem .
Substitute a=6, b=8, and c=10.
Answer:
0.8 s
Step-by-step explanation:
Horizontal velocity
= 61cos(35) = 49.968 f/s
To reach 40 feet, it takes
40/49.968 = 0.801 = 0.8 sec