Answer:
The mean nicotine content with a 95% confidence interval is (25.52mg, 26.88mg).
Step-by-step explanation:
The sample size is 95.
The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So
Then, we need to subtract one by the confidence level and divide by 2. So:
Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 94 and 0.025 in the t-distribution table, we have .
Now, we find the standard deviation of the sample. This is the division of the standard deviation by the square root of the sample size. So
Now, we multiply T and s
For the lower end of the interval, we subtract the mean by M. So 26.2 - 0.6783 = 25.52mg
For the upper end of the interval, we add the mean to M. So 26.2 + 0.6783 = 26.88mg
The mean nicotine content with a 95% confidence interval is (25.52mg, 26.88mg).
Answer:
$8
Step-by-step explanation:
Since he used $20
Each game cost $3 and he played 4 games (So 3 x 4 = 12)
20 - 12 = 8
Answer:
The correct option are;
1) You can compare irrational numbers using rational approximations
2) Square roots can be compares and ordered by comparing and ordering the numbers underneath the radical symbol
3) The closer together the numbers being compared, the more decimal places you need to use
Step-by-step explanation:
1) Two irrational numbers can be compared using rational approximation because both rational and irrational numbers are part of the real numbers and therefore have defined positions on the real number line such that the values of rational and irrational numbers can be compared based on their relative position on the number line.
2) The values of a square roots is directly proportional to the value under the radical symbol, therefore, square roots can be arranged in their order of magnitude and can also be compared by comparing and ordering the numbers under the radical symbol
3) When two numbers are very close, the difference between the numbers will be small. Therefore in order to clearly define the differences between two close numbers, the value of the difference between the numbers needs to be amplified by increasing the detail or the number of decimal place values of the numbers
Similarly, comparing two numbers that are very close requires increasing the detail or the number of decimal place values of the numbers
Answer: C because rhombus doesn’t have a right angle so I can’t be a rectangle nor a square
Answer is 31.6
Use this formula:
A² + B² = C²