PLS HELP ASAP ILL GIVE BRAINLKEST PLS THANKS

Explain how you can use the associative property to evaluate (7x50)x4.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to