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198 Answered Questions for the topic biostatistics

Biostatistics

05/25/19

Medical Research: What is the advantage of using a competing risk model as opposed to a standard Cox regression?

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Biostatistics

05/24/19

If the ratio of (A+G/T+C) in one strand of DNA is 0.70, what is the same ratio in complimentary strand?

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Answers •1

Biostatistics

05/03/19

What is the central limit theorem in biostatistics?

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Biostatistics

04/23/19

Statistics experts, what is the best trick or little "story" for remembering the definitions of Type 1 errors and Type 2 errors?

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Biostatistics

04/19/19

can this be found? or is there not enough information?

Let X be a random variable that represents the number of accidents at an intersection and assume X has a Poisson distribution within mean of 3.8 accidents per month what is the mean number of... more

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Biostatistics

04/19/19

what is the formula for the false positive and how do i calculate the predictive value positive?

Neuroblastoma is a rare serious but treatable disease. The prevalence of this disease is 6.3%. Study of the screening test for neuroblastoma the VMA test a urine test gave the following... more

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Biostatistics

04/19/19

tried this problem but im stuck and done know what im doing wrong please help

The time it takes broken arms of adults to heal is normally distributed with a mean of 53.7 days in a standard deviation of 5.2 days. Answer the following questions based on this... more

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Biostatistics

04/19/19

not sure how to formulate this

In the US the percentage of adults who have had an appendectomy is 28%. A simple random sample of 42 adults and the US is taken. Calculate the probability of the proportion of adults who have had... more

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Biostatistics Math Statistics Mathematics

03/30/19

Binomial Probability Question

In 2009, a study from a consumer research company reported that 54% of teenagers sent a text message on their cell phone during the past 30 days. A sample of 15 teenagers is studied. Round the... more

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Biostatistics Epidemiology

03/18/19

What are the five objectives of epidemiology?

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Biostatistics Epidemiology

03/18/19

What is the scope of epidemiology?

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Biostatistics Epidemiology

03/18/19

Can biostatistics determine susceptibility to disease?

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Biostatistics Epidemiology

03/18/19

What is the principle of epidemiology?

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Biostatistics Epidemiology

03/18/19

What are the two types of epidemiology?

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Biostatistics Pharmacology

03/13/19

How can biostatistics inform pharmaceutical research?

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Answers •1

Biostatistics Pharmacology

03/12/19

____ is a pill or treatment designed to look just like the active treatment but with no active ingredients.

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Answers •2

Biostatistics

12/10/18

Which test should I use to find the difference..(between dichotomous and cat barb with 5 levels) ask to choose caseses if greater or equal to 1. Need to run both parametric and non parametric

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Biostatistics Probability

10/23/18

What is my expected winnings?

A box contains 7 black blocks, numbered 1-7, and 7 yellow blocks, numbered 1-7. You randomly select two blocks, without replacement without regard to color. The absolute difference of the numbers... more

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Biostatistics

10/22/18

BIOSTATISTIC QUESTION

Mr. Ibrahim is responsible for maintaining clean linen for the hospital. The hospital has a contract with a laundry company to clean all dirty linen. He has been informed that the hospital is doing... more

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Biostatistics

10/21/18

what is the minimum weekly stock he should keep so he can be prepared at a level of 99% of all demands.? (show calculations)

Mr. Ibrahim is responsible for maintaining clean linen for the hospital. The hospital has a contract with a laundry company to clean all dirty linen. He has been informed that the... more

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Answers •1

Biostatistics

09/20/18

The event of getting a red ball

A box has fifteen balls in it, nine white and six red. We select one ball, do not put it back in the box, and select a second ball. So we are selecting two balls from the box. Find the probability... more

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Biostatistics

05/22/18

a tomatoe plant population has a height, which are normally distributed with a mean of 80 cm and a standard deviation of 5 cm. what is the proportion of plant w

a tomatoe plant population has a height, which are normally distributed with a mean of 80 cm and a standard deviation of 5 cm. what is the proportion of plant with heights:less than 72cm?Between... more

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Biostatistics

12/17/17

At least one of your answers is incorrect. A stemplot represents quantitative data by separating each value into the stem (such as the leftmost digit) and the

At least one of your answers is incorrect. A stemplot represents quantitative data by separating each value into the stem (such as the leftmost digit) and the leaf (such as the rightmost digit).... more

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Answers •1

Biostatistics

12/05/17

Biostatistics question

3. Suppose a researcher is interested in the random variable detailing average distance for patients traveled to the nearest health center decides to carry out a Z test. He collects a simple random... more

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Biostatistics

12/05/17

Biostatistics question

2. The US Census bureau is interested in capturing vital statistics that may or may not be directly related to health outcomes. One such statistic is annual income. Assume that the Census bureau... more

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Medical Research: What is the advantage of using a competing risk model as opposed to a standard Cox regression?

If the ratio of (A+G/T+C) in one strand of DNA is 0.70, what is the same ratio in complimentary strand?

What is the central limit theorem in biostatistics?

Statistics experts, what is the best trick or little "story" for remembering the definitions of Type 1 errors and Type 2 errors?

can this be found? or is there not enough information?

what is the formula for the false positive and how do i calculate the predictive value positive?

tried this problem but im stuck and done know what im doing wrong please help

not sure how to formulate this

Binomial Probability Question

What are the five objectives of epidemiology?

What is the scope of epidemiology?

Can biostatistics determine susceptibility to disease?

What is the principle of epidemiology?

What are the two types of epidemiology?

How can biostatistics inform pharmaceutical research?

____ is a pill or treatment designed to look just like the active treatment but with no active ingredients.

Which test should I use to find the difference..(between dichotomous and cat barb with 5 levels) ask to choose caseses if greater or equal to 1. Need to run both parametric and non parametric

What is my expected winnings?

BIOSTATISTIC QUESTION

what is the minimum weekly stock he should keep so he can be prepared at a level of 99% of all demands.? (show calculations)

The event of getting a red ball

a tomatoe plant population has a height, which are normally distributed with a mean of 80 cm and a standard deviation of 5 cm. what is the proportion of plant w

At least one of your answers is incorrect. A stemplot represents quantitative data by separating each value into the stem​ (such as the leftmost​ digit) and the

Biostatistics question

Biostatistics question

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At least one of your answers is incorrect. A stemplot represents quantitative data by separating each value into the stem (such as the leftmost digit) and the