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Anna [14]
2 years ago
15

A random sample of 159 recent donations at a certain blood bank reveals that 88 were type A blood. Does this suggest that the ac

tual percentage of type A donations differs from 40%, the percentage of the population having type A blood
Mathematics
1 answer:
kodGreya [7K]2 years ago
8 0

A random sample of 159 recent donations at a certain blood bank reveals that 88 were type A blood.  State the appropriate null and alternative hypotheses.

H0: p = 0.40

<h3>What is blood bank?</h3>

Ha: p > 0.40H0: p ? 0.40

Ha: p = 0.40 H0: p = 0.40

Ha: p ? 0.40H0: p = 0.40

Ha: p < 0.40

A blood bank is a facility where donated blood is collected and maintained for use in blood transfusions in the future. The phrase "blood bank" often refers to a department of a hospital where blood products are stored and where the necessary testing is carried out (to reduce the risk of transfusion related adverse events). However, it can also refer to a facility for collecting, and some hospitals do do it. Blood banking entails procedures for gathering, processing, testing, separating, and storing blood. Blood was initially transfused straight from donor to recipient before coagulation, but it was later found that by adding an anticoagulant and cooling the blood, it could be kept for a few days.

To learn more about blood bank from the given link:

brainly.com/question/27161388

#SPJ4

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Step-by-step explanation:

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A furniture store, Store A, is going out of business after 6 weeks and needs to sell everything. The sales team has decided that
tatiyna

Answer:

The function that models this situation is:

C(n) = \frac{1675}{2^{n} }, 1 \leq n \leq 6

Step-by-step explanation:

Cost of the bedroom set initially = $1675.00.

Cost of the bedroom set after 1 week = \frac{1675}{2^{1} }

Cost of the bedroom set after 2 weeks = \frac{(\frac{1675}{2} )}{2}

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C(n) = \frac{1675}{2^{n} }, 1 \leq n \leq 6.

6 0
4 years ago
5% as a decimal and fraction in simplest form
labwork [276]
⇒ Solutions 

5% as a decimal and fraction 

1) To make 5% to decimal you have to divide 5% by 100. Percent means something out of 100. 

⇒ 5% ÷ 100 = n
n = 0.05 

5% as a decimal = 0.05 

≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡

5% as a fraction 

1) Percent is always out of 100 so 5% would be out of 100
⇒ 5% = 5/100 

The fraction of 5% is 5/100 
5/100 can be reduced 
To reduce a fraction you have to divide by the greatest common factor

The greatest common factor of 5 and 100 is 5. 

5 ÷ 5 = 1
100 ÷ 5 = 20 

5/100 in simplest form would be 1/20

≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡

Simplify 

1) 5% as a decimal would be 
⇒ 0.05 

2) 5% as a fraction would be 
⇒ 1/20 




6 0
4 years ago
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Un delfinariu are un bazin in forma de cilindru cilcular drept. Pentru a oferi mai multe reprezentati, bazinul este impartit in
kakasveta [241]

Answer:

Înălțimea bazinului este de 20 m

Step-by-step explanation:

Raza de bază a bazinului cilindric = lățimea peretelui dreptunghiular = 15 m

Suprafața peretelui dreptunghiular = lungime × lățime = 300 m²

300 m² = lungime × 15 m

lungime = 300 m² / 15m

lungime = 20 m

Lungimea peretelui dreptunghiular = înălțimea bazinului cilindric = 20 m

Prin urmare, înălțimea bazinului = 20 m.

3 0
3 years ago
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