The mean of 14 numbers is 49. Removing one of the numbers causes the mean to decrease to 43. What number was removed?
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A: Given : n = 5 p = 0.49
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A: The question is about proportion.Given :Randomly selected no. of tankers ( n ) = 432No. of tankers…
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A: It is given that the quiz grades are 77, 85, and 66. The final grade is 61.
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A: Answer: From the given data, Number male workers = 24 = n1 Number of female workers = 36 = n2 Mean…
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A: Mean is the expected or average value of the observations. It can be obtained by dividing the total…
Q: A couple plans to have 14 children. Assume that girl and boy births are equally likely. Find the…
A: A couple plans to have 14 children. Assume that girl and boy births are equally likely.
Q: Keiko is recording the percentages she earned on each 81, 92, 78, 93, 81, 76, 90 Find the range of…
A: Range= high value - low value.
Q: Refer to the following stem-and- leaf diagram. It represents the marks out of 75 of 21 learners in a…
A:
Q: The mean of the numbers y1, y2, y3 and y4 is 10.4. Find the mean of the numbers 10 + y1, 10 + y2, 10…
A: Given information: Mean of numbers y1, y2, y3, y4=10.4Sum of numbers y1, y2, y3, y4=10.4*4y1+ y2+…
Q: Approximately how many of the families in the survey have less than four children? O 130 O 140 260…
A: Given graph is
Q: The stem-and-leat display repr members of the class. Identify the mean, median and mode for the data…
A: According to the given information, we have The stem and leaf is given. Data 47 50 55 57 63 64 64 66…
Q: Fine the mean number 12 31 45 67 78
A: Mean number is defined as the value calculated by dividing the sum of all the values by total number…
Q: Find the mean of weight of cranes in kg. The weight of 6 cranes are 25, 10, 40, 45, 9, 21 in kg.
A: The weights of the cranes are given as 25 kg, 10 kg, 40 kg, 45 kg, 9 kg, 21 kg. These are the data…
Q: Find mean of 2 and 10
A:
Q: A local politician running for school board wants to know where he is ranked in the polls before the…
A: This question is part of sampling methods for political party. Since it is rarely possible to poll…
Q: PART A: How many of the students in Landon’s class are at least 65 inches tall? Show or explain how…
A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks First we will…
Q: Provide an appropriate response. When 390 junior college students were surveyed,115 said that they…
A: It was given that 115 out of 390 junior college students have previously owned a motorcycle.
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A: Given : n=45 , x(sample mean of the differences ) = -2 mmHg , s(sample standard deviation) = 0.4…
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A: Given data set: 25, 18, 17, 29, 40
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Q: A group of seven sixth-graders measure and record their heights. The heights (in inches) are shown…
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Q: Calculate the average job gains using the numbers you obtain, 36,239.
A: The given numbers of jobs are 36 and 239.
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Q: State whether the mean, median, or mode is being used in the given statement. The grade received…
A: Given statement : The grade received by the greatest number of students.
Q: Many students work part-time. This past week, a group of student hours worked as 4, 28, 7, 15, 12…
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Q: The mean of the data set is 40.Find the value of x.The data set is 30,45,x,40,55,50.
A: From the provided information,The mean of data set is 40.The data set is 30,45,x,40,55,50.Number of…
Q: student wants to know his average homework grade for the first half of his math class. There were 7…
A: Given data, 100,90,95,89,92,85,95 What is the population mean of his homework grades?
Q: What is the median? 20 40 70 80 2000
A: From the provided information, The number of observations is 5, that is n = 1 The count of…
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A: Relative frequency
Q: Erin is married to Glen Mills. Erin earns an income of 500 and Glen earns an income of 400. Glen and…
A:
Q: Relatives gave Timothy $15,$50,$25 and $18 for his birthday.What is the mean amount of money…
A:
Q: What is the median? 20 30 60 80
A: The median of a set of values is the middle term of the values. To find the median, first, arrange…
Q: Lionel has just gone grocery shopping. The mean cost for each item in his bag was $3.19. He bought a…
A: Given info: The mean cost for each item in his bag was $3.19.
Q: Three cars are driving on a racetrack. The mean speed of the three cars is 100 miles per hour. Car X…
A: The objective of this question is to find the speed of Car Z using the mean speed of the three cars.
Q: make a stem and leaf plot for 6,7,8,14,14,16,21,26,30,30 - whats the median and mean? - how does…
A: We have given data: 67814141621263030The number of observations:
The
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- I don't know how to find the median or rangeMarasigan is a veterinarian. One morning, she asked her secretary to record the ustomers. The following are service times in minutes. 20, 35, 55, 28, 46, 32, 25, 56, 55, 28, 37, 60, 47, 52, 17 d the value of the 1st decile, 3rd decile, 5th decile, and 7th decile.The number of employees hired in different co.psnies are 36 , 60 , 71, 91 , 16 ,61 Find the mid range
- The median of 2, 9, 3, 5, 4, 7, 10, 2, 3, 12 is = 5.5 4.5 4 3.5About 40% of Jayden's texts are to his brother. 14. If Jayden sent 1500 texts last month, about how many did he send to his brother?Raquel runs a BBQ restaurant. She would like to know if the mean number of children that choose beef ribs daily is different from the average number of children that choose pork ribs daily in anticipation of creating a new children's menu. She asks her servers to make a special note every time they take an order from a child and record it in the log book. After 15 days, she records that an average of 39 children every day order beef ribs and 43 order pork ribs. The standard deviations for those 15 days are 3.1 for beef ribs and 2.9 for pork ribs, respectively. (a) Create a 95% confidence interval for the true difference in mean number of children that order beef and pork ribs recorded as (beef - pork). (b) Using the t-table, determine the test statistic and p-value for testing if there is a difference in the mean number of children that order beef and pork ribs daily. You do not need to perform a complete test.
- Greg wants to know the mean of his test scores, which are listed below. 78,82,95,88,82 Find the mean test score.Three cars are driving on a racetrack. The mean speed of the three cars is 100 miles per hour. Car X drives 109 miles per hour and Car Y drives 117 miles per hour. Use the mean to estimate the speed of Car Z. Then find the actual speed of Car Z.Suppose that 5% of teachers at a university attended a conference. If 4000 teachers are enrolled at the university, about how many teachers attended the conference? 2000 200 20 3800
- Mary is participating in a 6-day cross-country biking challenge. She biked for 60, 51, 62, 63, and 54 miles on the first five days. How many miles does she need to bike on the last day so that her average (mean) is 59 miles per day? ImilesJoselyn hopes to receive a grade of B or better in her statistics class. Currently she has scored 75, 83, and 81 on her three in-class tests and also has a homework average of 88. Her professor calculates the class grade by finding the mean of five grades: three in-class tests, the homework average and the final exam. What is the minimum score Joselyn must earn on the final exam to have a class grade (mean) of 80? A. 67 B. 95 C. 70 D. 73There are 1,050 seniors in the class. 483 seniors want to go to a basketball game What percentage of seniors do NOT want to go to a basketball game?
