Answer:
False
Step-by-step explanation:
Steps in calculating confidence Interval are
- Calculate degree of freedom by subtracting 1 from sample size that is df=sample size -1
- find α by subtracting confidence interval level from 1 and divide by 2
- Use value ot α and df to determine t from t-distribution table. From table it can be seen that the value of t increases as value of df decreases
- Divide standard distribution by square root of sample size. As sample size decreases this value will increase
- Multiple step 3 by step 4. We can say, if sample size is decreased this value will increase.
- For lower end , subtract step 5 from sample mean and for upper end add step 5 to sample mean.
If sample size is decrased, step 3 and step 4 will increase. As a result result obtained from step 5 will also increase. Hence, confidence interval will increase if sample size is decreased
Answer:
i have the same question i need help
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
come on really
Answer: 3/11
Step-by-step explanation:
Number of purple marbles = 6
Number of blue marbles = 5
Total number of marbles = 6 + 5 = 11
The probability of picking the dust purple marble will be 6/11. After a purple marvel has been picked, there'll be 5 purple marbles left and the total number of marbles will be 10, therefore the probability of picking the second purple marble will be 5/10.
Therefore we then multiply the probability of picking the first purple marble by the probability of picking the second purple marble. This will be:
= 6/11 × 5/10
= 6/11 × 1/2
= 3/11
40% because 32/80 is 0.4 move two decimal points
