Jack can complete 3 chemistry problems and 6 math problems in an hour, while Paula can complete 4 chemistry problems and 7 math problems in an hour; together they need to solve 11 chemistry problems and 17 math problems. Set up and solve a system of two linear equations to determine how long Jack and Paula should each work to complete the problems. Discuss whether your answer makes sense. If not, propose a better solution.

Option (a) We cannot conclude that more than 10% of the population is left-handed.

Step-by-step explanation:

We are given the following in the question:

Proportion of population that is left handed = 10% = 0.10

Significance level, α = 0.05

First, we design the null and the alternate hypothesis  

The null hypothesis sates that 10% of population is left handed and the alternate hypothesis state that more than 10% of the population is left handed.

This is a one tailed test.

The computed p-value is

P-value = 0.25

Comparison:

Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept the null hypothesis.

Thus, we conclude that 10% of the population is left handed.

Thus, the correct answer is

Option (a) We cannot conclude that more than 10% of the population is left-handed.