Emery Adams

Questions

• I roll a 6sided dice twice. What the propability to get the same number twice?
• If each outfit can only be worn by one model and there is no time for any model to wear more than one dress, how many different shows can Elodie put on? (Note: Two shows are considered the same if they contain the same models wearing the same dresses.)
• There are 35 athletes in a grade 10 gym class. 27 students play hockey and 10 play golf. what is the probability that a student chosen at random will play golf only?
• In how many different ways can 4 students be arranged in a row?
• How do I find the mean of the data set #{x_1,x_2,....,x_25}# given that #sum_(i=1)^25x_i^2=2568.25# and the standard deviation is #5.2#?
• How many unique ways are there to arrange the letters in the word PRETTY?
• What is the recurrence formula for #L_n#? #L_n# is the number of strings (#a_1,a_2,...,a_n#) with words from set {#0, 1, 2#} without any adjacent #0# and #2#.
• When all the numbers on a list are the same, then the standard deviation of the list is zero. #Is it true or false?
• Music class of 9th and 10th. Two students will be picked same time. There are 9 males in 9th and 8 males in 10th. There are12 females in 9th and 11 girls in the 10th. What is the probability both students are male?
• How to do 191st question?
• What is the probability of rolling a number 5 on a fair number cube ?
• A beg contains 4 white , 5 red and 6 green ball . Three balls are drawn at random . What is the chance that a white , a red and a green ball is drawn ?
• How many different arrangements can be made with in the word NUMBER?
• If 4 dice are rolled together, what is the number of ways in which at least 1 die shows 3? and If 4 dice are rolled together, what is the number of ways in which all 4 dice show 3
• How do I show that the probability of it being blue is 5/28 ?
• If a spinner is divided into 8 equal sections and you spin it twice, what is the probability of spinning a sum of 7?
• A knitted hat pattern comes in 4 styles with 4 stitch options and 3 sizes, and there are 7 yarns appropriate for the hat. Disregarding size, how many different hats can be made?
• Need your help in probability problems? Thanks :)
• How can a researcher avoid a biased sample?
• What is the z-score of a 97.5% one sided p-value?
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