80% of a class of 40 children passed a math test. A. How many children passed in maths? B. What fraction failed in maths

Q: An electric meter reader took a sample of six electric meter readings in an apartment building which…

A: Given the data, 7.7,8,7.8,8.3,8.3,8.1 We will find standard deviations Note, according to the…

Q: Frank Catton, the general manager of Billybob's floating raft hotel and casino in Tunica…

A:

Q: In a survey of 3130 adults aged 57 through 85 years, it was found that 89.1% of them used at least…

A: Solution: a. From the given information, n=3130 and p=0.891.

Q: (c) Assume this is a simple random sample of U.S. women. U3e the Efmpirical Pethod to asti children.…

A: The probability that a woman has more than seven children is approximately, PX>7=P8 or more…

Q: Given: 4 = 45, a = 3. What is the raw score when: 3. z = 2.14 4. z =-0.27

A:

Q: Use the following results from a test for marijuana use, which is provided by a certain drug testing…

A: From the provided information, the following are interpreted:The no. of cases of "false positive" is…

Q: 1.Find the remainder, r, when a is divided by b. Write the numerical value only. Given: a = -233,…

A: Solving the problem by finding the value of the remainder, r.   Note :: Only 1st question are…

Q: how many the chances

A: Consider that a general coin has a number on one side, and an image on the other side. The numbered…

Q: During a research, Alex weighs 100 mangoes and then placed this information on a bar chart. Did Alex…

A: Given: Alex weighs 100 mangoes and then placed this information on a bar chart. We need to figure…

Q: In a business survey for the Best Purchase Company Joey found from collecting data on 100 households…

A: Solution

Q: Last year, 48% of business owners gave a holiday gift to their employees. A survey of business…

A: We have given that  Sample size n = 90 Sample proportion p^= 0.34 Population proportion p^ = 0.48

Q: You were tasked to draw using computer-aided drafting to draw eight different buildings along a…

A: In question, We'll find that in how many ways we draw 8 different buildings along a single line. The…

Q: During the 4th of July weekend, state troopers arrested 390 drivers for DUI. Of those, 45% were…

A: Total number of arrested driver= 390  50% were suspected of using marijuana. So, 50% of 390 =…

Q: A survey of 600 school employees yielded the following information: 442 were instructors, 325 were…

A:

Q: Arrange the score from lowest to highest b. Find q1 c. Find q3

A: Part a: We arrange the score from lowest to highest as, Month Score February 27000…

Q: 57. Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She…

A:

Q: a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n= 549…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: 2.57, 0.92, 1.42, 1.29, 0.87, 2.77, 6.69, 6.01, 5.80, 6.52, 6.21, 4.09, 3.38, 6.87, 6.74, 9.29,…

A: From the provided information, Sample size (n) = 30 Confidence level = 95%

Q: Last year, 40% of business owners gave a holiday gift to their employees. A survey of business…

A:

Q: A friend flips the same coin 250 times. He gets 110 heads and 140 tails. How likely is it that the…

A: We have to find the probability using binomial approximation to normal.

Q: The student council at school surveyed 65 students. What percent of each population is this? a.)…

A: Let it is X % of the population 550 So X*550/100= 65 X= 6500/550 X= 11.818%

Q: In a survey of 3345 adults aged 57 through 85 years, it was found that 81.5% of them used at least…

A: (a) Obtain the number of subjects used at least one prescription medication   The number of subjects…

Q: C. A total of 72 students tried out for the spring musical. 37.5% of the students who tried out were…

A: Total number of students = 360 As per the given question, 35% of total students are 8th attend Lou…

Q: The table shows the test results of 6 students in DFS Mathematics. Draw a bar chart for the table.…

A:

Q: In a survey of 359 people, a pet food manufacturer found that 23 owned a dog but not a cat, 140…

A:

Q: 5 9 .. m 63 1 SE 01 LO 0 35

A:

Q: 2. One of the mascots received exactly 28 votes. Which mascot was it? Number of votes 50 40 30 20 10…

A: The information provided in the question are as follows : From the provided graph, it can be see…

Q: How many proportions are involved in the following situation? We want to compare the proportion of…

A: It is needed to determine the number of proportions involved in the given situation.

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.