2 × (x + 3) < 5
...................................................................
Answer:
Her data are partially shown in the table. Of the students she asks, 60% of those
who like to eat popcorn also like to eat candy. Complete the table to show the
number of student in each category.
Step-by-st
Rosa Collects data on what students at her school like to eat at the movie
theater. She asks a random sample of 120 students two questions. Do you liko
eat popcorn at the movie theatre? Do you like to eat candy at the movie theatre?
Her data are partially shown in the table. Of the students she asks, 60% of those
who like to eat popcorn also like to eat candy. Complete the table to show the
number of student in each category.
Answer:
85% of 50 is 42.5
Step-by-step explanation:
Just try it. Your question is kind of confusing but 85% of 50 is 42.5.
Answer:
6 hrs 33 minutes
Step-by-step explanation:
2hr 57min
+3hrs42min
----------------------
5 hrs 99 minutes
But 1 hr = 60 minutes so subtract 60 minutes and add 1 hour
6 hrs 33 minutes
Answer:
Step-by-step explanation:
In the two independent samples application, it involves the test of hypothesis that is the difference in population means, μ1 - μ2. The null hypothesis is always that there is no difference between groups with respect to means.
Null hypothesis: ∪₁ = ∪₂. where ∪₁ represent the mean of sample 1 and ∪₂ represent the mean of sample 2.
A researcher can hypothesize that the first mean is larger than the second (H1: μ1 > μ2 ), that the first mean is smaller than the second (H1: μ1 < μ2 ), or that the means are different (H1: μ1 ≠ μ2 ). These ae the alternative hypothesis.
Thus for the z test:
if n₁ > 30 and n₂ > 30
z = X₁ - X₂ / {Sp[√(1/n₁ + 1/n₂)]}
where Sp is √{ [(n₁-1)s₁² + (n₂-1)s₂²] / (n₁+n₂-2)}
