We know that <span>Lola walks 4/10 mile to her friends house. then she walks 5/10 mile to the store.
To solve the problem we have to use addition.
4/10 + 5/10 = 9/10
Lola walks 9/10 miles. </span>
Answer:
hey can you write it on the comments what it says so I can see it please and the equation
Answer:
Confidence Interval - 2.290 < S < 2.965
Step-by-step explanation:
Complete question
A chocolate chip cookie manufacturing company recorded the number of chocolate chips in a sample of 50 cookies. The mean is 23.33 and the standard deviation is 2.6. Construct a 80% confidence interval estimate of the standard deviation of the numbers of chocolate chips in all such cookies.
Solution
Given
n=50
x=23.33
s=2.6
Alpha = 1-0.80 = 0.20
X^2(a/2,n-1) = X^2(0.10, 49) = 63.17
sqrt(63.17) = 7.948
X^2(1 - a/2,n-1) = X^2(0.90, 49) = 37.69
sqrt(37.69) = 6.139
s*sqrt(n-1) = 18.2

confidence interval:
(18.2/7.948) < S < (18.2/6.139)
2.290 < S < 2.965
Bc u dont write ur work down. If u actually take the steps to do the question it wont be that bad