An unbalanced cube is rolled 250 times, and a 6 is recorded on 75 of those rolls. What is the observed probablilty that a 6 will be recorded when this cube is rolled?    0.03   0.08   0.3   0.8

5.

Q.NO.3: a) Reciprocal of 8 values of X are 0.0667, 0.1111, 0.0833,0.0556, 0.500, 0.0357, 0.0278, 0.2222 Calculate arithmetic mean.

A Park Service arborist is curious if nature preserve volunteers measure the diameter of the sapling's tree trunk when they measure it's growth. In her random sample of 200 volunteers, she found that 62% did. What is the SE? 0.3100 0.0012 0.0269 0.0343

3) You measure the length of 5 radish seedlings at 7 days and 10 days and get the following results in mm (do NOT use R except for part (d)): seedling #: 1 2 3 4 S 5 days: 30 20 38 49 32 33.8 10.686 7 days: 35 27 46 58 34 40 12.145 difference: -5 -7 -8 -9 -2 -6.2 2.775 (a) Is there a difference in length? (Note: this should be one-sided. Why??) (b) Repeat (a), but now use a regular (unpaired) t-test. (c) What happened in (b)? (d) Verify the normal distribution assumption for the paired t-test you did in (a). (You may use R for this part).

According to research, 55% of millennials (those born between 1981 and 1997) reported using a library or bookmobile within the last year. Suppose that a random sample of 200 millennials is taken. Complete parts a and b below. Since 195 is a. Complete this sentence: We would expect We would expect 110 of the sample to have used a library or bookmobile within the last year, give or take (Round to the nearest integer as needed.) b. Would it be surprising to find that 195 of the sample have used a library or bookmobile within the last year? Why or why not? be surprising. ▼than 2 of the sample to have used a library or bookmobile within the last year, give or take 1. from the it

A humane society claims that less than 72% of households in a certain country own a pet. In a random sample of 400 households in that country, 272 say they own a pet. At a = 0.10, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (Type an integer or a decimal. Do not round.) A. Less than 72% of households in the country own a pet. % of households in the country own a pet. C. More than % of households in the country own a pet. D. The percentage households in the country that own a pet is not %. O B. Let p be the population proportion of successes, where a success is a household in the country that owns a pet. State Ho and H₂. Select the correct choice below and fill in the answer boxes to complete your choice. a (Round to two decimal places as needed.) A. Ho:pz Ha: p Ho: P# 0.72 Ha: p= 0.72 OC. Ho: P Ha:ps

Need this answered please.

An education researcher claims that 60% of college students work year-round. In a random sample of 300 college students, 180 say they work year-round. At a=0.05, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round) O A. At most % of college students work year-round. B. 60 % of college students work year-round. OC Atleast % of college students work year-round. OD. The percentage of college students who work year-round is not %. Let p be the population proportion of successes, where a success is a college student who works year-round. State Hn and H, Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Ho p# O B. Ho p- OC. O C. Ho P OD. Ho Pe Ha p> H ps Ha p< Clear all Check answer Get more help- View an…

how is 0.46= .32276 because on the z table it's 32.64 so where does the .32276 come from