Answer: multiply u would get 50
Step-by-step explanation:
Answer:
The middle 99.7% of Twinkies weigh between approximately 1.2 and 1.8 ounces.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 1.5
Standard deviation = 0.1
middle 99.7%
Within 3 standard deviations of the mean, so
1.5 - 3*0.1 = 1.2
1.5 + 3*0.1 = 1.8
So the answer is:
The middle 99.7% of Twinkies weigh between approximately 1.2 and 1.8 ounces.
Answer:
Number of person use more than 15 hours per week from 800 subscribers = 448
Step-by-step explanation:
Given:
Total number of sample = 50
Result = 28 Person use more than 15 hours per week
Find:
How many people use more than 15 hours per week
Computation:
⇒ Probability of Person use internet more than 15 hours per week = 28 / 50
⇒Probability of Person use internet more than 15 hours per week = 0.56
⇒Number of person use more than 15 hours per week from 800 subscribers = 800 × Probability of Person use internet more than 15 hours per week
⇒Number of person use more than 15 hours per week from 800 subscribers = 800 × 0.56
⇒ Number of person use more than 15 hours per week from 800 subscribers = 448
Sn = n/2 ( a1+an)
= 6/2 (10+85)
= 3 (95)
= 285
