7. Find the class intervals if the arithmetic mean of the following distrihution is 33 and smed mean 35 : Step deviatio! + 2 Frequency 10 25 30 20 10
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- A(n) _______ uses line segments to connect points located directly above class midpoint values.the monthly rents in dollars paid by 8 people are given below. 840,860,900,930,985,1035,1075,1095 suppose one of the people move her rent changes from 840 to 880? what happends to the mean ? what happends to the medium?The matchsticks in 10 packages of matches randomly selected from the matches produced by a match factory were counted and found as 39, 43, 35, 46, 47, 38, 41, 40, 45 and 36, respectively. Accordingly, what is the arithmetic average of the garbage in the packages produced by this match factory?
- Is the following variable discrete or continuous: The number of times a coin must be flipped until the first Tails is observed. Is the following variable discrete or continuous: The number of questions asked during a 1-hour review session.The scale characterized by the classification of events, objects, or persons into mutually exclusive categories and whose only mathematical relationship are those of equivalence and nonequivalence is called:Suppose that S is a finite set of positive integers. If the greatest integer in S is removed from S then the average value (arithmetic mean) of the integers remaining is 32 If the least integer in S is also removed, then the average value of the integers remaining is 35 If the greatest integer is then returned to the set, the average value of the integers rises to 40 The greatest integer in the original set S is 72 greater than the least integer in S What is the average value of all the integers in the set S?
- Classify the following statements as to whether they belong to the area ofdescriptive statistics or inferential statistics___________________ 1. At most 5% of SLU students are smokers.___________________ 2. Assuming that less than 20% of the Kalinga coffee beans weredestroyed by a typhoon these past months, we should expect anincrease of no more than P30 for a kilogram of coffee by the endof the year. ___________________ 3. An employee generalized that the average monthly salary of a regular employee in a certain company is P12,000. ___________________ 4. A study found out that all customers who have received a giftcertificate from a store 75% went back to the store to shop.___________________ 5. The average grade in statistics of 50 students is 83.60.The following is the record of ratings of 40 players in a tournament. 65 85 91 58 43 86 73 33 76 80 57 33 53 29 40 27 72 19 51 67 37 4 18 92 13 45 61 39 23 22 22 41 27 51 63 47 19 35 39 72 (a) Find the number of classes or intervals required and the class width5.11. A point is chosen at random on a line segment of length L Interpret thisstatement, and find the probability that the ratio of the shorter to the longersegment is less than 1/4.
- An investment company advertised that last year its clients, on average, made a profit of 9% . Assuming that average refers to the mean, which of the following claims must be true based on this information? Note: More than one statement could be true. If none of the statements is true, mark the appropriate box. Last year more than half of their clients made a profit of at least 9% . Last year at least one of their clients made a profit of exactly 9% . Last year at least one of their clients made a profit of 9% or more. Two years ago some of their clients made a profit of at least 9% . Last year all of their clients made a profit of less than 16% . None of the above statements is true.Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 132 adult males, the mean pulse rate is 67.9 bpm and the standard deviation is 10.6 bpm. Complete parts (a) and (b) below. a. Express the original claim in symbolic form.Calculate the starting and ending point for each of the five intervals in Question 4.