Anational firm reports mean earnings of $75 ± $12 (µ ± σ) per unit sold over the lifetime of the company. a competing company over the past 36 reporting periods had reported mean earnings equal to $78 per unit sold. conduct a one-sample z test to determine whether mean earnings (in dollars per unit) are larger (compared to that reported by the national firm) at a .05 level of significance. 1. state the value of the test statistic and whether to retain or reject the null hypothesis. 2. compute effect size using cohen’s d.

For how answer my question this will be the last question can you answer in math subject

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

Klmn and pqrs are similar trapezoids. which side of pqrs corresponds to lm