1. ## Conditional probability answer check

I just want to check my answer with you guys.

A supermarket wants to know peoples shopping habits. 250 were surveyed. 60% was females. 70% of all people do shopping on a weekday. 1/3 of the males do their shopping on a weekday rather than on the weekend.

What is the probability that the person does shopping on the weekend GIVEN its a female?

MY CONTINGENCY TABLE THAT I DREW OUT

2. ## Re: Conditional probability answer check

It looks like you have the Weekend and Weekday totals switched around. And I don't think you used
1/3 of the males do their shopping on a weekday rather than on the weekend
that piece of info correctly.

And if you're making a table of totals it should be a red flag if you're coming up with numbers that indicate you have things like "92.5 people" (how do you have half of a person?)

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