Answer:
[4 + 1] *[7-2] =25
Step-by-step explanation:
[4 + 1] *[7-2] =25
We need to get to 25
What makes 25
5*5
4+1 =5
7-2 =5
5*5 =25
So we need brackets around 4+1 and around 7-2
Answer:
-2.72
Step-by-step explanation:
Answer:
5+7x
Step-by-step explanation:
1/2(6-4x) +2 +9x
3-2x+2+9x
5+7x
give the question and I will try if I couldn't srry
<h2><u>
Answer with explanation</u>
:</h2>
Let be the average estimated calorie content in the population.
As per given , we have
, since the alternative hypothesis is right -tailed , so the test is a right tailed test.
Sample size : n= 58
Sample mean :
sample standard deviation : s= 86
Population standard deviation is unknown , so we use t-test.
Test statistic:
Critical value at significance level 0.001 and degree of freedom 57 (∵ df=n-1 ) :
Decision : Test statistic value is greater than the critical value at significance level 0.001, so we reject the null hypothesis .
Conclusion : We have sufficient evidence to support the claim that the true average estimated calorie content in the population sampled exceeds the actual content.