08/20/20

Geometry high school

If uv = 6x, vw=4x and uw = 10 what is vw
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08/20/20

4. The following letters are rearranged BROWN. What is the probability that the BRO are together and in this order

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08/20/20

Find the distance between A(0, 1) and B(-7, -5) to the nearest hundredth.
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08/20/20

Probability question
The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 119 and standard deviation of 18.Someone qualifies as having Stage 2 high blood pressure if their... more
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08/20/20

Assistance on probability
A business has Brand A, Brand B and Brand C of the same product. Market research has shown that 43% of costumers that purchase this product will choose Brand A. An organization conducts a poll... more
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08/19/20

Point P is chosen at random from the perimeter of rectangle ABCD what is the probability that he lies on DC
Geometric Probability is the topic and I don’t understand how to solve this problem I really need help.
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08/19/20

Can you please help me with this question?
There are 6 blue and 9 red marbles in a bag. Three marbles are picked at random. What is the probability (%) of picking 2 blue and 1 red marble?
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08/19/20

Determine the type of sampling
Determine the type of sampling used (simple random, stratified, systematic, cluster, or convenience).The first 50 people who walk into a sporting event are polled on their television preferences.A.... more
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08/19/20

Determine the type of sampling

Determine the type of sampling used (simple random, stratified, systematic, cluster, or convenience).A group of test subjects is divided into twelve groups; then four of the groups are chosen at... more
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08/19/20

Test statistic and critical value

You wish to test the following claim (HaHa) at a significance level of α=0.02      Ho:p1=p2      Ha:p1>p2You obtain 315 successes in a sample of size n1=694 from the first population. You obtain... more
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08/19/20

Test statistic and p-value
You wish to test the following claim (HaHa) at a significance level of α=0.10      Ho:p1=p2      Ha:p1<p2You obtain 42.8% successes in a sample of size n1=360 from the first population. You... more
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08/19/20

Test statistic and p-value

You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly different from 0.72. You use a significance level... more
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08/19/20

Critical value and test statistic

You wish to test the following claim (HaHa) at a significance level of α=0.005      Ho:p=0.41      Ha:p<0.41You obtain a sample of size n=674 in which there are 267 successful observations.What... more
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08/19/20

Test statistic and p-vlaue
Test the claim that the proportion of people who own cats is smaller than 50% at the 0.01 significance level.The test is:left-tailedright-tailedtwo-tailedCorrectBased on a sample of 500 people,... more
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08/19/20

Test statistics
Suppose are running a study/poll about the proportion of voters who prefer Candidate A. You randomly sample 114 people and find that 66 of them match the condition you are testing. Suppose you are... more
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08/19/20

Test statistic and critical value

You wish to test the following claim (HaHa) at a significance level of α=0.05      Ho:μ=78.7      Ha:μ<78.7You believe the population is normally distributed and you know the standard... more
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08/19/20

Critical value and test statistic

You wish to test the following claim (HaHa) at a significance level of α=0.01α=0.01.      Ho:μ=73.1      Ha:μ≠73.1You believe the population is normally distributed, but you do not know the... more
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08/19/20

Test statistic and critical value

Test the claim that the mean GPA of night students is significantly different than 2.7 at the 0.2 significance level.CorrectThe test is: two-tailedleft-tailedright-tailedCorrectBased on a sample of... more
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08/19/20

"Duration (amount of time)" is what type of data?
A study was done to determine the age, number of times per week, and the duration (amount of time) of residents using a local park in San Antonio, Texas. The first house in the neighborhood around... more
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08/19/20

Determine what the key term refers to in the example for Researcher A.
Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients... more
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08/19/20

In the table, describe the shape of the cross section formed when a particular plane passes through the cone.
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08/19/20

Which test to use?
HI,I am fairly new to stats and need some help. I can't seem to determine which test to use in a certain question. As soon as I see unknown questions i dont know which test to use. T test, chi... more
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08/16/20

Problem Solving

A national Survey of 1509 respondents reached on land lines and cell phones found that the percentage of adults who favor legalized abortion has dropped from 51%a year ago to 45%. The study claimed... more
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08/15/20

Can you please help me with this question?
Every day, Dave eats either a sandwich or pizza for lunch. Over 42 days, Dave had pizza 3 times for every 4 times he had a sandwich. Over the next x days, he had pizza 3 times for every 2 times he... more
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08/14/20

Point T is on a line segment SU. Given SU=4x+1, TU=3x, and ST=3x-1, determine the numerical length of SU
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