Answer:
Step-by-step explanation:
a) it is true that the bigger the sample size, the more accurate the reported average of the sample. An increased sample size gives a smaller standard deviation. This improves accuracy.
b) It is false. A type 1 error occurs when a true null hypothesis is rejected
c) It is true. The null hypothesis is considered true until the alternative hypothesis which is contrary is favoured by sufficient evidence.
Answer:
false
Step-by-step explanation:
5+5=10
5+4=9
Answer:
2-9292
Step-by-step explanatio1:
The probability that at least 2 of the dinners selected are pasta dinners will be 0.8181...
<u><em>Explanation</em></u>
Pasta dinners = 7 , Chicken dinners = 6 and Seafood dinners = 2
The student selects 5 of the total 15 dinners. So, total possible ways for selecting 5 dinners
For selecting at least 2 of them as pasta dinners, the student can select 2, 3, 4 and 5 pasta dinners from total 7 pasta dinners.
So, the possible ways for selecting 2 pasta dinners
The possible ways for selecting 3 pasta dinners
The possible ways for selecting 4 pasta dinners
The possible ways for selecting 5 pasta dinners
Thus, the probability for selecting at least 2 pasta dinners
Y=x+5. add 5 to both sides