Answer:
160-128=32
Step-by-step explanation:
distribute what is in the parentheses
Answer:
0.34
Step-by-step explanation:
Percentages can be changed to decimals by dividing by 100 (or moving the decimal <u>left</u> two places).
Decimals can be changed to percentages by multiplying by 100 (or moving the decimal <u>right</u> two places).
Since 34% can be written as 34.0%, we <u>divide by 100</u> and move the decimal <u>left</u> two places so it becomes 0.34.
Options:
H0 :
H0 : µ =12
H0 > 12> H1
None of these
Answer:
None of these
Step-by-step explanation:
The answer is
H0 : µ ≧ 12
Ha : µ<12
We formulate the null and alternative hypothesis here to state that battery life of the laptop lasts at least 12 hours(more than but not less, null hypothesis) or that it lasts less than 12 hours(alternative hypothesis).
The null hypothesis is the one being tested to know whether we would reject it or not in which case we choose the alternative hypothesis. To test the hypotheses, we do a t test using a significance level of say 0.05(95% confidence interval) and find our p value in order to compare and decide if the null hypothesis would be rejected or not based on statistical significance.
T and 3t are like terms. 8 is by itself.
Answer:
A, F, and C are the correct options.
Step-by-step explanation: