According to an online source, the mean time spent on smartphones daily by adults in a country is 2.85 hours. Assume that this is correct and assume the standard deviation is 1.2 hours. Complete parts (a) and (b) below. a Suppose 150 adults in the country are randomly surveyed and asked how long they spend on their smartphones daily. The mean of the sample is recorded. Then we repeat this process, taking 1000 surveys of 150 adults in the country. What will be the shape of the distribution of these sample means? The distribution will be because the values will be b. Refer to part (a). What will be the mean and standard deviation of the distribution of these sample means? The mean will be and the standard deviation will be (Round to two decimal places as needed.) their smartphones daily. The mean of the sample is recorded Then we repeat this 1000 surveys of 150 adults in the country What will be the shape of the distributic sample means? The distribution will be berause the values will be I deviation of the distributio left skewed b. Refer to part (a) Wh sample means? approximately Normal The mean will be right skewed (Round to two decimal places as needed) von will be wat will be the shape of the dist sample means? The distribution will be because the values will be 5 on of the distr distributed symmetrically. mostly small but there will be a few very large values. pe mostly large but there will be a few very small values. The distribution will be because the values will be b. Refer to part (a). What will be the mean and standard deviation of the distribution of thes sample means? The mean will be (Round to two decima and the standard deviation will be ed.) hours 2. hours
