A study1 conducted in July 2015 examines smartphone ownership by US adults. A random sample of people were surveyed, and the study shows that of the men own a smartphone and of the women own a smartphone. We want to test whether the survey results provide evidence of a difference in the proportion owning a smartphone between men and women. Let group be US men and let group be US women.

(a) State the null and alternative hypotheses
(b) Give the notation for the sample statistic.
(c) Give the value for the sample statistic.
(d) In the sample, which group has higher smartphone ownership: men or women?

Why is studying fractions important

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate