3b. [4 marks] The Head of Year, Mrs Smith, decides to select a student at random from the year group to read the notices in assembly. There are 80 students in total in the year group. Mrs Smith calculates the probability of picking a male student 8 times in the first 20 assemblies is 0.153357 correct to 6 decimal places. Find the number of male students in the year group.

An experiment has three steps with three outcomes possible for the first step, two outcomes possible for the second step, and four outcomes possible for the third step. How many experimental outcomes exist for the entire experiment?

A password for a website must have 4 different digits. How many unique passwords are possible if they are made up of 4 digits which do not repeat? What is the probability of someone getiing the correct pasword if they try 75 different passwords? Round your answer to the nearest tenth of a percent. % Blank 1: Blank 2:

Assume that when adults with smartphones are randomly​ selected, 49​% use them in meetings or classes. If 12 adult smartphone users are randomly​ selected, find the probability that fewer than 5 of them use their smartphones in meetings or classes. type answer as an integer or round to four decimal places as needed.

Solve the problem.Suppose the candidate pool for two appointed positions includes 10 women and 5 men. All candidates were told that the positions were randomly filled. Find the probability that two men are selected to fill the appointed positions. Select one: A. 0.095238 B. 0.238095 C. 0.428571 D. 0.133333

Find the probability of purchasing a ticket with a number whose sums of the first three and last three digits are equal if it has six digits and may be any number from 000000 to 999999.

find the probability of choosing a letter other than N from a bag that contains the 15 letters of the name Bernard Riemann. Express your As a fraction in Lois terms or a decimal round to the nearest millionth

find the probability of guessing at least 9 out of 14 correctly. Round inetermediate calculations and final answers to three decimal places

Q2

a² 16 46² 9 ? 9. One merchant has seven Asava horses (A), a second has nine Haya horses (H), and a third has ten camels (C). When each merchant gives two of his animals away-one to each other merchant-the combined value of each merchant's animals is the same. Assume that the values of the animals are integers, and each of the merchants now owns a total of X currency worth of animals, where X-(A+C+H)=168. Calculate the value of A + C+H, the combined value of owning one of each animal. ☆f #6 (A) 89 (B) 94 (C) 131 (D) 262 PVN-166 0.5 9200245415 00 SHOT ON MI 10 ULTRA