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FrozenT [24]
1 year ago
14

f a seed is planted, it has a 85% chance of growing into a healthy plant. If 9 seeds are planted, what is the probability that e

xactly 1 doesn't grow?
Mathematics
1 answer:
Vlad1618 [11]1 year ago
3 0

The probability that exactly 1 doesn't grow will be 0.07

<h3> What is Probability?</h3>

It is defined as the ratio of the number of favourable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

We can use Bernoulli estimation to solve this. P(g) = 0.85, probability of not growing into healthy plant P(n) = 1-P(g) = 1 - 0.85 = 0.15

Using the Bernoulli approximation:

P(n=1)=⁹C₁xP(n)¹.⁵xP(g)⁸.⁵

P(n=1)=9x0.15¹.⁵x0.8⁸.⁵

P(n=1)=0.07

Hence the probability that exactly 1 doesn't grow will be 0.07

Learn more about the probability here:

brainly.com/question/11234923

#SPJ1

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Answer:

is the difference between highest and lowest values.

Step-by-step explanation:

6 0
2 years ago
The sales tax for an item was $24.50 and it cost $490 before tax.
Ymorist [56]

The sales tax rate is 5%.

Step-by-step explanation:

Given,

Sales tax for an item = $24.50

Cost of item before tax = $490

Sales tax rate = \frac{Sales\ tax}{Cost\ of\ item}*100\\

Sales\ tax\ rate=\frac{24.50}{490}*100\\\\Sales\ tax\ rate=\frac{2450}{490}\\\\Sales\ tax\ rate=5\%

The sales tax rate is 5%.

Keywords: sales tax, percentage

Learn more about percentages at:

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3 0
3 years ago
The diameter of a spindle in a small motor is supposed to be 5.8 millimeters (mm) with a standard deviation of 0.14 mm. If the s
Citrus2011 [14]

Answer: A. H0: Mean= 5 and Ha: Mean is not equal to 5.

Step-by-step explanation:

Definitions:

  • Null hypothesis (H_0) is a statement describing population parameters according to the objective of the study. It takes "≤,≥,=" signs.  
  • Alternative hypothesis(H_a)  is a statement opposite to the null hypothesis elaborating population parameters according to the objective of the study. It takes ">, <, ≠" signs.

Given: The diameter of a spindle in a small motor is supposed to be 5.8 millimeters.

If the spindle is either too small or too large, the motor will not work properly. so, Mean diameter ≠ 5.8 to work correctly.

i.e. H_a: \text{Mean}\neq 5.8

So, H_a: \text{Mean =5.8}

The required null and alternative hypotheses:

H0: Mean= 5 and Ha: Mean is not equal to 5.

7 0
3 years ago
Joe work for 7 hours and earned 105.00 write the rate what is unit rate
Eduardwww [97]

Answer:

15 Dollars per hour

Step-by-step explanation:

Because 15 * 7 = 105

7 0
2 years ago
Is this how you work this out or am I doing it wrong​
Sauron [17]
You’re doing it right
8 0
3 years ago
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