1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vichka [17]
3 years ago
12

I have 5 pinks, 4 yellow, 3 orange, and 3 red starbursts. What is the probability that I will randomly pick a yellow starburst,

eat it, and then randomly pick a red starburst?
Mathematics
1 answer:
Wittaler [7]3 years ago
7 0
P(y)=4/15
P(r)= 3/14

(I’m assuming this is without replacement since you are the starburst, so there is one less of the total.)
You might be interested in
A medical researcher wondered if there is a significant difference between the mean birth weight of boy and girl babies. Random
Yuliya22 [10]

Answer:

b) independent samples t-test

t=\frac{(5.92 -5.74)-(0)}{\sqrt{\frac{1.88^2}{5}}+\frac{1.81^2}{5}}=0.154  

p_v =2*P(t_{8}>0.154) =0.881  

So with the p value obtained and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the mean of the group 1 (boys) is NOT significantly different than the mean for the group 2 (Girls).  

Step-by-step explanation:

The system of hypothesis on this case are:  

Null hypothesis: \mu_1 = \mu_2  

Alternative hypothesis: \mu_1 \neq \mu_2  

Or equivalently:  

Null hypothesis: \mu_1 - \mu_2 = 0  

Alternative hypothesis: \mu_1 -\mu_2\neq 0  

Our notation on this case :  

n_1 =5 represent the sample size for group 1  

n_2 =5 represent the sample size for group 2  

We can calculate the mean and deviation for eaach group with the following formulas:

\bar X= \frac{\sum_{i=1}^n X_i}{n}

s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

\bar X_1 =5.92 represent the sample mean for the group 1  

\bar X_2 =5.74 represent the sample mean for the group 2  

s_1=1.88 represent the sample standard deviation for group 1  

s_2=1.81 represent the sample standard deviation for group 2  

If we see the alternative hypothesis we see that we are conducting a bilateral test and with independnet samples t test.

b) independent samples t-test

The statistic is given by this formula:  

t=\frac{(\bar X_1 -\bar X_2)-(\mu_{1}-\mu_2)}{\sqrt{\frac{s^2_1}{n_1}}+\frac{S^2_2}{n_2}}  

And now we can calculate the statistic:  

t=\frac{(5.92 -5.74)-(0)}{\sqrt{\frac{1.88^2}{5}}+\frac{1.81^2}{5}}=0.154  

The degrees of freedom are given by:  

df=5+5-2=8

And now we can calculate the p value using the altenative hypothesis:  

p_v =2*P(t_{8}>0.154) =0.881  

So with the p value obtained and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the mean of the group 1 (boys) is NOT significantly different than the mean for the group 2 (Girls).  

7 0
3 years ago
Find the x in the following triangle <br> I’ll give brainliest
densk [106]

Answer:

78

Step-by-step explanation:

6 0
2 years ago
Which undefined geometric term is described as a location on a coordinate plane that is designated by an ordered pair, (x, y)?
jeka94
It is a POINT. A single dot you can locate on a coordinate plane is a point.
4 0
3 years ago
Read 2 more answers
Show that <br><br> Sin60 / cos60 = tan 60
Lerok [7]

Answer:

  • <em><u>sin60</u></em><em><u>=</u></em><em><u>opp\hyp</u></em>
  • <em><u>cos60</u></em><em><u>=</u></em><em><u>adja\hyp</u></em>
  • <em><u>tan60</u></em><em><u>=</u></em><em><u>opp\adj</u></em>
  • <em><u>sin60\cos60</u></em><em><u>=</u></em><em><u>tan60</u></em>
6 0
1 year ago
Please help me 10 points will give crown
Lubov Fominskaja [6]
A,d,b, and then c ,basically least to greatest
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the standard deviation of 98 97 99 98 96
    6·1 answer
  • V I’mbbbvvv please help
    14·2 answers
  • How do you round 649 to the nearest hundred
    5·2 answers
  • Enter two million, eighty-seven thousand, three hundred four.
    14·1 answer
  • Try the numbers 22, 23, 24, 25 in the equation 4/3 = 32/d
    9·1 answer
  • Тоо со уоu угарз аппе:
    5·1 answer
  • Fond the value of x.
    15·2 answers
  • PLEASE HELP ASAP!!!!!!!! ILL MARK BRAINLEST
    13·1 answer
  • Tyler family builds a new pen on their dairy goat farms
    12·1 answer
  • Find the sum of 6x^2+10x-16x 2 +10x−1 and -5x^2-2x+1−5x^2 −2x+1.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!