Answer:
95% confidence interval for the proportion of days that IBM stock increases.
(0.45814 , 0.58146)
Step-by-step explanation:
<u><em>Step:1</em></u>
Given that a stock market analyst notices that in a certain year, the price of IBM stock increased on 131 out of 252 trading days.
Given that the sample proportion

Level of significance = 0.05
Z₀.₀₅ = 1.96
<u><em>Step:2</em></u>
<u><em>95% confidence interval for the proportion of days that IBM stock increases.</em></u>
<u><em></em></u>
<u><em></em></u>

(0.5198 - 0.06166 , 0.5198+0.06166)
(0.45814 , 0.58146)
<u><em>Final answer:-</em></u>
95% confidence interval for the proportion of days that IBM stock increases.
(0.45814 , 0.58146)
Answer:
34
Step-by-step explanation:
1. if to guess the Caleb's age is 'x' years and Linda's age is 'y' years now, then
2. according to the 'sum of the ages of Caleb and Linda is 55 years' it may be written: x+y=55 - the first equation of the system;
3. according to the condition '8 years ago, Caleb's age was 2 times Linda's age' it may be written: (x-8)(y-8)=2 - the second equation of the system;
4. if to make up the system of two equation and calculate the values of 'x' and 'y':
5. if x=34, then Caleb is 34 old now.
The mystery number is 8 or in decimal is 8538.01. hope its correct.
Answer:
10/53
Step-by-step explanation:
P = no of orange/total = 20/106 = 10/53
1. the answer is 27/10
2. the answer is 3 1/7
3. the answer is 3 5/6
Please mark me the brainliest!