100 students appeared for an examination. The results of those who failed are given below : Marks esil 25 ibeM 30 : 10 15 20 Total No. of Students : 4 7 30 If the average marks of all students were 68.6. find out average marks of those who passed.

Q: How many kids? In a survey 46,152 women were asked how many children they had. The results were as…

A:

Q: Benson Manufacturing is considering ordering electronic components from three different suppliers.…

A: GIven,   A B C Defective 15 25 50 Good 485 475 450   To find, a) Formulate the hypothesis…

Q: A survey item administered at the end of a training program asked participants their opinion about…

A: The given contingency table is, The formula for calculating the expected count is, Calculation of…

Q: A wine company sent out a batch of 2,000 coupons for $50 off a returning customer's order made…

A: When subjects refuses to take part in a study, or drop out before the study is completed, then…

Q: 4)        a) 10 samples of different Publishers are on display at an Open Day.…

A: Given - Problem on Arrangement and Selection To Find - Total ways of arrangements and selection

Q: On a multiple choice test with 25 questions, each question has four possible answen is correct. For…

A: We have to find mean  of correct answerfor given data ...

Q: To compare the time they spent running on the wheel between the three different days (in other…

A: ANOVA To check the difference in mean excercise time of rats in three different conditions.

Q: Data was collected for 177 randomly selected 10 minute intervals. For each ten-minute interval, the…

A: The maximum value of the histogram =270 The minimum value of the histogram =220 The range of the…

Q: In an experiment for a new drug, to determine the most effective dose and method of administration,…

A: Combination of factor at known as treatment.

Q: (a) What percentage of people has an IQ score between 90 and 110? (b) What percentage of people has…

A: Given that  Mean = 100 and  SD = 10

Q: In order to determine the size of a park's bear population, naturalists catch 24 bears, tag them,…

A:

Q: A restaurant wants to offer frezen yogurt. The workers survey 20 random customers about their…

A: To Determine: how many should be strawberry? Given: a restaurant wants to offer frozen yogurt.the…

Q: A SURVEY WAS CONDUCTED IN 2010 AND 2020. THE 2010 RESULTS SUMMARIZED THE RESPONSI WHEREAS THE…

A: The given table is HEALTH ISSUE 2010 SURVEY 2020 SURVEY ATE RECOMMEND AMOUNT OF FIBROUS…

Q: A sample has SS= 20 and s2 =4. How many scores are in the sample?

A:

Q: (b) What percentage of the eight population values stated above, fall within the interval (μ- σ, μ +…

A:

Q: A student receives the following grades, with an A worth 4 points, a B worth 3 points, a C worth 2…

A: A student receives the following grades: A worth 4 pointsB worth 3 pointsC worth 2 pointsD worth 1…

Q: SRS of 25 commuters to the Washington DC re selected, and each is asked how far they ommute to work…

A: Given data,n=25The sample mean x=39Sample sd     s=6Construct 90% CI?

Q: A drug trial had 603 participants. A survey was taken to determine how many had fatigue as a side…

A:

Q: The annual amount of rainfall for 25 cities was recorded and is shown in the histogram below. Annual…

A: Step (I)Given  Hirtogram belowAnnual rainfall(in)Find intervals could represent on annual rainfallof…

Q: The computed test statistic for the appropriate test is O 1.3931 O 3.6426 O -13.2685 O -1.1803

A: As per Bartleby's guidelines solve only the first question. Thank you. Given: n1=34 and x1=20.…

Q: Two HR managers ranked the 12 entries to hire executives for operations department of a hospital is…

A: We have given ranks by two HRs and we have to find how much they are agree or disagree with each…

Q: Use the ogive to approximate (a) the number in the sample, (b) the location of the greatest increase…

A:

Q: Below are the clocked driving speeds (in miles per hour) a police officer recorded for drivers along…

A: Five Number Summary :  A five-number summary simply consists of the smallest data value, the first…

Q: In a recent health survey, 700 single men were asked to circle the appropriate letter or letters:…

A: Consider the provided question, (a) Number of single men who circled a member of private gym letter…

Q: For a z-score of Z = -2.2, give the proportion in the body (hint: use the z-table), and state…

A:

Q: B are defined on a common sample D30.56, find P(A and B).

A: Here use basic probability rule

Q: Find the mode of the following amounts of exercise (in hours) randomly selected runners completed…

A: Find the mode of the following amounts of exercise (in hours) randomly selected runners completed…

Q: ged? In on, 18% 2012, a school chelor's ached?

A: See hand written solution ,

Q: How many participants had anxiety but not nausea? I participants How many participants had anxiety…

A: It is given that there are 161 participants. It is also given that 84 had anxiety, 67 had nausea and…

Q: Determine the sample size needed to be 90% confident the population proportion estimate is within 2%…

A: Given, Confidence level = 90% No prior information regarding values for p and q. since there is no…

Q: How many scores 2. between 96 and 106?

A: HERE GIVEN , mean µ = 86 and σ= 10. HERE USE NORMAL DISTRIBUTION BECAUSE POPULATION IS LARGE ENOUGH…

Q: The table shows the results of a survey of 200 people attending a hockey game. Choice for Souvenirs…

A: First of all we will find the percentage of people who are expected to buy a flag from the given the…

Q: (a) What proportion of the population has scores below 27 on the Chapin test? D.15866 (b) What…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Consider the corresponding contingency table in a sample of patients from a hospital. There is the…

A: Percentage is a number expressed as a fraction of 100. The symbol % is used to denote percentage.…

Q: c= 0.98, o=7.3, and E= 1 Assume that a preliminary sample has at least 30 me n3= (Round up to the…

A: Provided information: C=0.98 Standard deviation = 7.3 Margin of error = 1

Q: a. How many homes were studied? b. What is the class interval? c. One hundred homes sold for less…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Based on a sample of 800 people, 48% owned cats The test statistic is:  (to 2 decimals) The…

A: The test statistics of a proportion z-test is z=p^-pp1-pn Since the p-value to be tested is not…

Q: What is the median for the following Pounds of Honey Collected Per Hive 50 51 52 70 71 2 3 14 i5 16…

A: Given,

Q: A syllabus has the following grade scale 15% HW 60% Exams 25% Final You receive the following scores…

A: The grade scored in different assignments is given by   H.W = 100% Exam1 = 84% Exam2 = 91% Exam3 =…

Q: scores in their technical exam (in percentage). APPLICANT SCORE APPLICANT SCORE 1 Ana 75.2 11 Mia…

A: Solution: The observation in increasing order are 50.5, 58.5, 60.3, 63.3, 63.4, 68.7, 71.2, 74.2,…

Q: 1. What percentage of scores fell within ±1 SD for ZADHD?

A: Introduction: The "ZADHD" values indicate the z-scores of ADHD.

Q: ata was collected for 180 randomly selected 10 minute intervals. For each ten-minute interval, the…

A:

Q: A sample has SS = 20 and s? = 4. How many scores are in the sample? а. 4 b. 5 c. 6 d. cannot be…

A:

Q: Samples of four different chocolate chip cookies show the following numbers of calories for the…

A:

Q: A sample has SS = 32 and s? = 8. How many scores are in the sample? Remember, n is not the same as…

A: Formula : s2 = SS/(n-1)

Q: (a) What is the probability that a sampled woman has two children? Round your answer to four…

A: From the given information,Total number of women in a survey is n = 46,236From the given table,…

Q: Give the test statistic. O z = 1.64 Ot= 1.58 Ot= 1.64 Oz= 1.58

A: