6TH GRADE 7TH GRADE 15 11

Q: What percentage of those who play guitar, also play piano given the following information. 18…

A: What percentage of those who play guitar, also play piano given the following information. 18 - play…

Q: A market researcher's claim is that women spend more time each day on Facebook than men.  If p1…

A: Here let p1 denote the proportion of women and p2 denote the proportion of men. The claim is that…

Q: In elementary statistics, how do you calculate class width? I don't understand it.

A: According to the given information in this question We need to find that how we calculate class…

Q: Identify the population and sample. In a random sample of Hartnell students, 45 said they…

A:

Q: Is the average time to complete an obstacle course different when a patch is placed over the right…

A: There are two independent samples which are right and left. We have to test whether the average time…

Q: How many different sets of three candies can you select?

A: A candy jar has 10 different candies in it three candies are selected from jar

Q: In​ Lindsay's class, there were three students who scored 80 on a test and six students who scored…

A:

Q: In a survey of 100 randomly selected dentists, 28 dentists recommended Pearly brand over the other 5…

A: The random variable X is the dentists recommended Pearly brand toothpaste The total sample size is…

Q: Nolan surveyed 7 teachers from each academic department at school. Each department has an equal…

A: Given: 7 teachers from each academic department surveyed Each department has an equal number of…

Q: survey 100 students, 81 use Facebook, 36 use google, and 20 use both. what percentage uses what

A: Let represent the set of students who use Facebook, represent the set of students who use Google+,…

Q: What is the value of Ex² for the scores 1, 0, 2, 4? O 21 O 28 O 14

A:

Q: there are 347 people that take a survey and assume that 112 of them are women. what percentage of…

A: The percentage of females in the survey is calculated below:

Q: A recent survey of 537 California college students found that 481 had taken an online class in the…

A:

Q: At The Fencing Center, 60% of the fencers use the foil as their main weapon. We randomly survey 28…

A: Given n=28 P=1-0.6=0.4

Q: The Human resource team is surveying employee satisfaction. Among the stores it has around the…

A: cluster sampling and how the human resource team's approach to surveying employee satisfaction using…

Q: 2. A bag contains six identical balls: two reds,3 blues and one yellow. Three balls are drawn from…

A: Given: A bag contains six identical balls: 2 reds, 3 blues and 1 yellow. 3 balls are drawn from this…

Q: About 2% of the population has a particular genetic mutation. 600 people are randomly selecte Find…

A: Given data,p=2%=0.02n=600Mean=?

Q: As part of a statistics project, a teacher brings a bag of marbles containing 500 white marbles and…

A: The data collection method is Survey or Sample.

Q: speech therapist gave a patient an assessment to test articulation. The patient pronounced 5 test…

A:

Q: (a) Identify the null and alternative hypotheses. (b) Determine if the sample size is large enough…

A: The following information is provided: The sample size is N=631N = 631, the number of favorable…

Q: A researcher randomly selected 100 adults aged 18-25 and 100 adults aged 50-60. Within each age…

A: Given, A researcher randomly selected 100 adults aged 18-25 and 100 adults aged 50-60. Within each…

Q: In a survey of middle school students, 70% play basketball and 40% play basketball and football. Of…

A:

Q: Approximately 19% of music lovers like Country Music. Of those who do, 99% do not have mild brain…

A:

Q: I looked if the points scored per season is best indicator for wins in regular season. Points…

A: In this step, we note down all the information given in the question and prepare the background for…

Q: For the end of the semester, student evaluations. 6 out of the 39 students in a class completed the…

A:

Q: A fast food chain surveyed a random sample of students to determine what pizza they prefer. Cheese…

A:

Q: Identify the population and sample. In a random sample of Salinas residents, 137 said they would…

A: Population: The population in a statistical study is the entire group of individuals about which we…

Q: se Brianna's sample to estimate the number of red gumballs in the jar.

A: Given that  Class jar containing 200 gumballs of two different colors  (Red and green) Brianna draws…

Q: in a survey of 80 fifth grade students who play soccer,basketball,or both,60 students play and 40…

A: Form the given information, In a survey of 80 fifth grade students who play soccer, basketball or…

Q: Of the 328 patients that completed the survey last year, 211 of them claimed to be returning…

A: Given: 328 patients completed the survey 211 patients returning

Q: The number of students taking the Scholastic Aptitude Test (SAT) has risen to an all-time high of…

A: The number of times the SAT was taken and the number of students are as follows.     Number of…

Q: There are 25 students in a science class. Twenty percent of the students are randomly chosen to…

A: Solution :  There are 25 students in a class.  Twenty percent of the students are randomly chosen…

Q: The accompanying data file shows the midterm and final grades for 32 students. Click here for the…

A: FinalMidterm8678949783869289887775688468796865518660678052707964968196938393827210095789110089807591…

Q: Martha Quinn is interested in the proportion of fast to slow songs she will play today.  She takes…

A: In this method of selection, each song have equal probability of getting selected and the selection…

Q: Please use the given information to answer subquestions 10.a, 10.b, and 10.c

A: As sample size increases, the prediction interval becomes narrower. Hence among sample sizes 350,…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.