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densk [106]
3 years ago
9

The spinner has a 25% chance of landing on with number?​

Mathematics
2 answers:
-BARSIC- [3]3 years ago
6 0

Answer:

1

Step-by-step explanation:

one quarter = 25%.

The one spot looks about one quarter.

Feliz [49]3 years ago
4 0

Number 1 because it takes up 1/4 of the circle and 1/4= 25%
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A recent estimate by a large distributor of gasoline claims that 60% of all cars stopping at their service stations chose unlead
Anton [14]

Answer:

We reject the null hypothesis and conclude that at least 2 proportions differ from the stated value.

Step-by-step explanation:

There are 3 types of gas listed in the question.

Thus;

n = 3

DF = n - 1

DF = 3 - 1

DF = 2

Let's state the hypotheses;

Null hypothesis; H0: P_regular = P_super unleaded = 20%; P_i leaded = 60%

Alternative hypothesis; Ha: At least 2 proportions differ from the stated value.

Observed values are;

Regular gas; O = 51

Unleaded gas; O = 261

Super Unleaded; O = 88

Total observed values = 51 + 261 + 88 = 400

We are told that super unleaded and regular were each selected 20% of the time and that unleaded gas was chosen 60% of the time.

Thus, expected values are;

Regular gas; E = 20% × 400 = 80

Unleaded gas; E = 60% × 400 = 240

Super Unleaded; E = 20% × 400 = 80

Formula for chi Square goodness of fit is;

X² = Σ[(O - E)²/E]

X² = (51 - 80)²/80) + (261 - 240)²/240) + (88 - 80)²/80)

X² = 13.15

From the chi Square distribution table attached and using; DF = 2 and X² = 13.15, we can trace the p-value to be approximately 0.001

Also from online p-value from chi Square calculator attached, we have p to be approximately 0.001 which is similar to what we got from the table.

Now, if we take the significance level to be 0.05, it means the p-value is less than it and thus we reject the null hypothesis and conclude that at least 2 proportions differ from the stated value.

4 0
3 years ago
What is another way to write 300+20+5
kakasveta [241]
325 three hundred twenty-five
8 0
3 years ago
Read 2 more answers
Which expression represents the calculation “add 5 and 6, then multiply by 3"?
PSYCHO15rus [73]

Answer:

(5+6)3 I think?????????

7 0
3 years ago
Inductive and deductive reasoning differ in which way?
Brums [2.3K]

Answer:

(D) Conclusions drawn using deductive reasoning are always valid, while conclusions drawn using inductive reasoning may or may not be valid.

Step-by-step explanation:


7 0
3 years ago
14 is a gcf of M AND 210. what are the possible values of m
alina1380 [7]
GCF(14; M) = 210

210|2
105|5
  21|3
    7|7
    1|

210 = 14 × 3 × 5

The possible values of M:
14 × 1 = 14
14 × 2 = 28
14 × 4 = 56
14 × 7 = 98
14 × 8 = 112
14 × 11 = 154
14 × 13 = 182
.
.
.

3 0
3 years ago
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