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14% of all Canadians have seasonal allergies. 21.48% of 149 Montrealers reported suffering from allergies. Develop a two-tailed alternative hypothesis. Use the period to indicate the decimal and not the comma. Ex: 52.3 NOT 52,3
Complete this concluding statement:
We have compared the sample statistic
Answer for part 1
%
to the population parameter
Answer for part 2
%
and found a z value of
Answer for part 3
which corresponds to a p value of
Answer for part 4
.
Using an alpha level of 0.05 we Answer
fail to reject
reject
the null hypothesis of no difference between the percentage of Montrealers and Canadians with seasonal allergies.
The results of a history exam reveals a normal distribution of marks with an average of 67% and a standard deviation of 5%. READ THE QUESTIONS CAREFULLY.
The TOP 94.52% of students scored at least what grade on the test?
Answer for part 1
%
The bottom 0.02% of students scored equal to or lower than what mark?
Answer for part 2
%
Benoit is opening a new pizza shop and trying to estimate how much pepperoni he'll need to order. A recent randomized survey of 80 families in his area found that 29% of them ordered pepperoni on their pizza. Develop a 95% confidence statement.
The margin of error for the 95% confidence interval is
Answer for part 1
%
Benoit can be 95% confident that between
Answer for part 2 and coordinate 1
% and
Answer for part 2 and coordinate 2
% of families in his area order pepperoni on their pizzas.
Reflect on the quotation below. Write in a brief paragraph.
"All knowledge degenerates into probability" - David Hume
Answer the following, final answer must be reduced to lowest term.
- The probability of getting even number if a fair die is rolled.
- The probability of getting hearts in a deck of a card.
- The probability of getting aces in a deck of card
- The probability of getting a black cards in a deck of card
- The probability of getting a 2 head in tossing 3 coins
Reflect on the quotation below. Write in a brief paragraph.
"My statistics are facts, and your facts are just statistics" - Jonathan Lynn
.One bag contains 4 white balls and 2 black balls, another contains 3 white balls and 5 black balls. If one ball is drawn from each bag. Find the probability that;
a) Both are white
b) Both are black
c) One is white and one is black
The coefficient of skewness of a series A is 0.15 and that of series B is 0.062. Which of the two series
is less skewed?
Imagine that 11 people take a 10 question test. Suppose one student gets 10 correct answers, one gets
9 correct, one gets 8 correct, and so on, all the way down to the student getting none correct. What is
the mode score, accurate to three decimal places?
A pub uses a periodic review system where it checks the liquor stock every Tuesday and place an order which arrives on Thursday. The pub has observed that demand for beer averages 7 units per day with a standard deviation of 2 units. In any given week, they would like to be 90% sure that they don't run out of beer before the order arrives. On Tuesday, if they have 10 units of beer on hand, how many units should they order?
a. 56.84 units
b. 59.00 units c. 41.70 units
d. 52.60 units
