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2 years ago

PLEASE HELP

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frozen [14]2 years ago

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Answer:

what are the importance of neutralization reaction in daily life

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company manufactured six television sets on a given day, and these TV sets were inspected for being good or defective. The resul

lana [24]

Sampling distribution involves the proportions of a data element in a given sample.

The proportion of Good TV set is 0.67
The number of ways of selecting 5 from 6 TV sets is 6
The number of ways of selecting 4 from 6 TV sets is 15

Given

$n = 6$

Sample Space = Good, Good, Defective, Defective, Good, Good

(a) Proportion that are good

From the sample space, we have:

$Good = 4$

So, the proportion (p) that are good are:

$p = \frac{Good}{n}$

$p = \frac{4}{6}$

$p = 0.67$

(b) Ways to select 5 samples (without replacement)

This is calculated using:

$^nC_r = \frac{n!}{(n - r)!r!}$

Where

$r = 5$

So, we have:

$^6C_5 = \frac{6!}{(6 - 5)!5!}$

$^6C_5 = \frac{6!}{1!5!}$

$^6C_5 = \frac{6 \times 5!}{1 \times 5!}$

$^6C_5 = \frac{6}{1}$

$^6C_5 = 6$

Hence, there are 6 ways

(c) All possible sample space of 4

First, we calculate the number of ways to select 4.

This is calculated using:

$^nC_r = \frac{n!}{(n - r)!r!}$

Where

$r = 4$

So, we have:

$^6C_4 = \frac{6!}{(6 - 4)!4!}$

$^6C_4 = \frac{6!}{2!4!}$

$^6C_4 = \frac{6 \times 5 \times 4}{2 \times 1 \times 4!}$

$^6C_4 = \frac{30}{2}$

$^6C_4 = 15$

So, the table is as follows:

$\left[\begin{array}{ccc}TV&Good&Proportion\\1,2,3,4&2&0.5&2,3,4,5&2&0.5&3,4,5,6&2&0.5\\4,5,6,1&3&0.75&5,6,1,2&4&1&6,1,2,3&3&0.75\\1,2,3,5&3&0.75&3,5,6,2&3&0.75&1,3,4,5&2&0.5\\1,3,4,6&2&0.5&1,4,5,2&3&0.75&2,4,6,1&3&0.75\\2,4,6,3&2&0.5&2,4,6,5&3&0.75&3,5,6,1&3&0.75\end{array}\right]$

The proportion column is calculated by dividing the number of Good TVs by the total selected (4) i.e.

$p = \frac{Good}{n}$

(d) The sampling distribution

In (a), we have:

$p = 0.67$ --- proportion of Good TV

The sampling error is calculated as follows:

$SE_n = |p - p_n|$

So, we have:

$\left[\begin{array}{ccc}TV&Good&SE\\1,2,3,4&2&0.17&2,3,4,5&2&0.17&3,4,5,6&2&0.17\\4,5,6,1&3&0.08&5,6,1,2&4&0.33&6,1,2,3&3&0.08\\1,2,3,5&3&0.08&3,5,6,2&3&0.08&1,3,4,5&2&0.17\\1,3,4,6&2&0.17&1,4,5,2&3&0.08&2,4,6,1&3&0.08\\2,4,6,3&2&0.17&2,4,6,5&3&0.08&3,5,6,1&3&0.08\end{array}\right]$

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3 years ago

describe one way an invasive species, such as the zebra mussel, can decrease the carrying capacity for a native species in an ec

ira [324]

The zebra mussel is an invasive species that decrease the carrying capacity of native species by competing for limited food resources. Invasive species are harmful to the homeostasis of an ecosystem.

The carrying capacity refers to the maximum population size of a species sustained by specific environmental conditions.

The factors that affect the carrying capacity include the availability of both biotic (e.g., food, presence of invasive species, etc) and abiotic (e.g., water, habitat) resources.

For example, Zebra mussels, and Quagga mussels are invasive species that can decrease the carrying capacity of native mussels by taking away limited food and attaching themselves to the native mussels.

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3 years ago

Which statement best describes the relationship between an allele and a gene?.

Usimov [2.4K]

Answer:

Which statement best describes the relationship between an allele and a gene? An allele is a variation of a gene that can be expressed as a phenotype. New technologies enable oils to be extracted from plants to make renewable biodiesel fuel.

Explanation:

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2 years ago

All of the following are involved in Type 2 hypersensitivity, except

shusha [124]

All of the following are involved in Type 2 hypersensitivity, except D. IgE

<h3>What is Type 2 hypersensitivity?</h3>

This refers to the type of reaction where the body has an immune reaction to antibodies (IgG or IgM) that are directed at certain areas of the body that leading to functional loss, or tissue damage

Hence, we can see that from the complete question, there are different answer choices that show the different antibodies that are involved in the immuno-reaction and the one that is NOT involved in the list of options is IgE.

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2 years ago

Question 1 fill in the blank: every database has its own formatting, which can cause the data to seem inconsistent. Data analyst

harkovskaia [24]

Data analysts use the CLEAR FORMAT tool to create a clean and consistent visual appearance for their spreadsheets.

<h3>Database </h3>

A database is an organized collection of data stored in a general or personal computer A database can be created with spreadsheets in order to produce a clean and consistent data for the purpose of study and analysis.

Every database has it own formatting and this leads to data inconsistency as well. To avoid inconsistency of data, Data is cleaned by analysts with the use of the tool clear format.

Hence we can conclude that Data analysts use the clear format tool to create a clean and consistent visual appearance for their spreadsheets.

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2 years ago