4 years ago

A series of steps that guide scientist to investigate questions about the natural world

Biology

2 answers:

IgorLugansk [536]4 years ago

7 0

Scientific method , so they’re right^

Fantom [35]4 years ago

6 0

Answer:

I believe this would be The Scientific Method

Explanation:

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A swine producer wants to know if the average weight of his pigs is different from the breed average of 230 lb. He selects a ran

Aloiza [94]

Answer: t= -1.60

Explanation:

Let $\mu$ be the population mean weight of pigs.

As per given , we have

$H_0:\mu=230$

$H_0:\mu\neq230$

Sample size : n= 16

Sample mean = $\overline{x}=220\ lb$

Sample standard deviation : $s=25\ lb$

<em>Since the population standard deviation is not known so the test is a</em><em> t-test.</em>

Test statistic for population mean : $t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}$

$t=\dfrac{220-230}{\dfrac{25}{\sqrt{16}}}$ (Substitute all the values.)

$t=\dfrac{-10}{\dfrac{25}{4}}$

$t=\dfrac{-40}{25}=-1.60$

Hence, the value of the test statistic needed to test the null hypothesis : t= -1.60

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3 years ago

Plant cells and animal cells were observed under a microscope. The characteristics of two cells are listed below.

ziro4ka [17]

Answer is b.
all cells have cell membrane

6 0

3 years ago

Read 2 more answers

is the following statement true or false only eukaryotic cells are capable of photosynthesis because photosynthesis requires chl

Ivan

Answer:

False

Explanation:

Eukaryotes along with some prokaryotes also perform the process of photosynthesis. Photosynthesis needs chloroplast and it is also found in some of the prokaryotes.

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3 years ago

The intricate plumage of male birds of paradise has become increasingly elaborate throughout their evolution due to females mati

jekas [21]

Answer:

3. sexual selection

Explanation:

Because artificial selection is the one made by humans like dog breeds.

Disruptive selection is when extreme values for a trait in a population are favored like big and small sizes. Stabilizing is when the trait is pushed towards the average. Sexual selection is when the trait aids in competition among individuals for access to preferred mates.

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3 years ago

Explain how The two processes are interrelated.

SVETLANKA909090 [29]

Answer:

the picture isnt popping up

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3 years ago

A series of steps that guide scientist to investigate questions about the natural world​

A series of steps that guide scientist to investigate questions about the natural world